diff --git a/RomRepoMgr.Core/Models/RomSetModel.cs b/RomRepoMgr.Core/Models/RomSetModel.cs
index 527d43f..008d488 100644
--- a/RomRepoMgr.Core/Models/RomSetModel.cs
+++ b/RomRepoMgr.Core/Models/RomSetModel.cs
@@ -43,5 +43,6 @@ namespace RomRepoMgr.Core.Models
         public long   HaveRoms           { get; set; }
         public long   MissRoms           { get; set; }
         public long   Id                 { get; set; }
+        public string Category           { get; set; }
     }
 }
\ No newline at end of file
diff --git a/RomRepoMgr.Core/Workers/DatImporter.cs b/RomRepoMgr.Core/Workers/DatImporter.cs
index 6996249..89c1186 100644
--- a/RomRepoMgr.Core/Workers/DatImporter.cs
+++ b/RomRepoMgr.Core/Workers/DatImporter.cs
@@ -43,14 +43,18 @@ namespace RomRepoMgr.Core.Workers
 {
     public sealed class DatImporter
     {
+        readonly string _category;
         readonly string _datFilesPath;
         readonly string _datPath;
         bool            _aborted;
 
-        public DatImporter(string datPath)
+        public DatImporter(string datPath, string category)
         {
             _datPath      = datPath;
             _datFilesPath = Path.Combine(Settings.Settings.Current.RepositoryPath, "datfiles");
+
+            if(!string.IsNullOrWhiteSpace(category))
+                _category = category;
         }
 
         public void Import()
@@ -109,7 +113,8 @@ namespace RomRepoMgr.Core.Workers
                     Sha384      = datHash,
                     Version     = datFile.Header.Version,
                     CreatedOn   = DateTime.UtcNow,
-                    UpdatedOn   = DateTime.UtcNow
+                    UpdatedOn   = DateTime.UtcNow,
+                    Category    = _category
                 };
 
                 Context.Singleton.RomSets.Add(romSet);
@@ -747,7 +752,8 @@ namespace RomRepoMgr.Core.Workers
                                    romSet.Machines.Sum(m => m.Medias.Count(f => f.Media.IsInRepo)),
                         MissRoms = romSet.Machines.Sum(m => m.Files.Count(f => !f.File.IsInRepo)) +
                                    romSet.Machines.Sum(m => m.Disks.Count(f => !f.Disk.IsInRepo)) +
-                                   romSet.Machines.Sum(m => m.Medias.Count(f => !f.Media.IsInRepo))
+                                   romSet.Machines.Sum(m => m.Medias.Count(f => !f.Media.IsInRepo)),
+                        Category = _category
                     }
                 });
             }
diff --git a/RomRepoMgr.Database/Context.cs b/RomRepoMgr.Database/Context.cs
index f75c671..345f7d2 100644
--- a/RomRepoMgr.Database/Context.cs
+++ b/RomRepoMgr.Database/Context.cs
@@ -120,6 +120,8 @@ namespace RomRepoMgr.Database
                 entity.HasIndex(e => e.Filename);
 
                 entity.HasIndex(e => e.Sha384);
+
+                entity.HasIndex(e => e.Category);
             });
 
             modelBuilder.Entity<Machine>(entity =>
diff --git a/RomRepoMgr.Database/Migrations/20200904212924_AddRomSetCategory.Designer.cs b/RomRepoMgr.Database/Migrations/20200904212924_AddRomSetCategory.Designer.cs
new file mode 100644
index 0000000..f5048a2
--- /dev/null
+++ b/RomRepoMgr.Database/Migrations/20200904212924_AddRomSetCategory.Designer.cs
@@ -0,0 +1,417 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using RomRepoMgr.Database;
+
+namespace RomRepoMgr.Database.Migrations
+{
+    [DbContext(typeof(Context))]
+    [Migration("20200904212924_AddRomSetCategory")]
+    partial class AddRomSetCategory
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "3.1.7");
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.DbDisk", b =>
+                {
+                    b.Property<ulong>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("CreatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.Property<bool>("IsInRepo")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Md5")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(32);
+
+                    b.Property<string>("OriginalFileName")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Sha1")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(40);
+
+                    b.Property<ulong?>("Size")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("UpdatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("IsInRepo");
+
+                    b.HasIndex("Md5");
+
+                    b.HasIndex("Sha1");
+
+                    b.HasIndex("Size");
+
+                    b.ToTable("Disks");
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.DbFile", b =>
+                {
+                    b.Property<ulong>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Crc32")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(8);
+
+                    b.Property<DateTime>("CreatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.Property<bool>("IsInRepo")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Md5")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(32);
+
+                    b.Property<string>("OriginalFileName")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Sha1")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(40);
+
+                    b.Property<string>("Sha256")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("Sha384")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(96);
+
+                    b.Property<string>("Sha512")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(128);
+
+                    b.Property<ulong>("Size")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("UpdatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Crc32");
+
+                    b.HasIndex("IsInRepo");
+
+                    b.HasIndex("Md5");
+
+                    b.HasIndex("Sha1");
+
+                    b.HasIndex("Sha256");
+
+                    b.HasIndex("Sha384");
+
+                    b.HasIndex("Sha512");
+
+                    b.HasIndex("Size");
+
+                    b.ToTable("Files");
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.DbMedia", b =>
+                {
+                    b.Property<ulong>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("CreatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.Property<bool>("IsInRepo")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Md5")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(32);
+
+                    b.Property<string>("OriginalFileName")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Sha1")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(40);
+
+                    b.Property<string>("Sha256")
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(64);
+
+                    b.Property<ulong?>("Size")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("SpamSum")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("UpdatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("IsInRepo");
+
+                    b.HasIndex("Md5");
+
+                    b.HasIndex("Sha1");
+
+                    b.HasIndex("Sha256");
+
+                    b.HasIndex("Size");
+
+                    b.HasIndex("SpamSum");
+
+                    b.ToTable("Medias");
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.DiskByMachine", b =>
+                {
+                    b.Property<ulong>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("DiskId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("MachineId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DiskId");
+
+                    b.HasIndex("MachineId");
+
+                    b.HasIndex("Name");
+
+                    b.ToTable("DisksByMachines");
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.FileByMachine", b =>
+                {
+                    b.Property<ulong>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("FileId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("MachineId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("FileId");
+
+                    b.HasIndex("MachineId");
+
+                    b.HasIndex("Name");
+
+                    b.ToTable("FilesByMachines");
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.Machine", b =>
+                {
+                    b.Property<ulong>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("CreatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<long>("RomSetId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("UpdatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name");
+
+                    b.HasIndex("RomSetId");
+
+                    b.ToTable("Machines");
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.MediaByMachine", b =>
+                {
+                    b.Property<ulong>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("MachineId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<ulong>("MediaId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("MachineId");
+
+                    b.HasIndex("MediaId");
+
+                    b.HasIndex("Name");
+
+                    b.ToTable("MediasByMachines");
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.RomSet", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Author")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Category")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Comment")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Date")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Filename")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Homepage")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Sha384")
+                        .IsRequired()
+                        .HasColumnType("TEXT")
+                        .HasMaxLength(96);
+
+                    b.Property<DateTime>("UpdatedOn")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Version")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Author");
+
+                    b.HasIndex("Category");
+
+                    b.HasIndex("Comment");
+
+                    b.HasIndex("Date");
+
+                    b.HasIndex("Description");
+
+                    b.HasIndex("Filename");
+
+                    b.HasIndex("Homepage");
+
+                    b.HasIndex("Name");
+
+                    b.HasIndex("Sha384");
+
+                    b.HasIndex("Version");
+
+                    b.ToTable("RomSets");
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.DiskByMachine", b =>
+                {
+                    b.HasOne("RomRepoMgr.Database.Models.DbDisk", "Disk")
+                        .WithMany("Machines")
+                        .HasForeignKey("DiskId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RomRepoMgr.Database.Models.Machine", "Machine")
+                        .WithMany("Disks")
+                        .HasForeignKey("MachineId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.FileByMachine", b =>
+                {
+                    b.HasOne("RomRepoMgr.Database.Models.DbFile", "File")
+                        .WithMany("Machines")
+                        .HasForeignKey("FileId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RomRepoMgr.Database.Models.Machine", "Machine")
+                        .WithMany("Files")
+                        .HasForeignKey("MachineId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.Machine", b =>
+                {
+                    b.HasOne("RomRepoMgr.Database.Models.RomSet", "RomSet")
+                        .WithMany("Machines")
+                        .HasForeignKey("RomSetId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("RomRepoMgr.Database.Models.MediaByMachine", b =>
+                {
+                    b.HasOne("RomRepoMgr.Database.Models.Machine", "Machine")
+                        .WithMany("Medias")
+                        .HasForeignKey("MachineId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RomRepoMgr.Database.Models.DbMedia", "Media")
+                        .WithMany("Machines")
+                        .HasForeignKey("MediaId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/RomRepoMgr.Database/Migrations/20200904212924_AddRomSetCategory.cs b/RomRepoMgr.Database/Migrations/20200904212924_AddRomSetCategory.cs
new file mode 100644
index 0000000..c17f698
--- /dev/null
+++ b/RomRepoMgr.Database/Migrations/20200904212924_AddRomSetCategory.cs
@@ -0,0 +1,21 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace RomRepoMgr.Database.Migrations
+{
+    public partial class AddRomSetCategory : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>("Category", "RomSets", nullable: true);
+
+            migrationBuilder.CreateIndex("IX_RomSets_Category", "RomSets", "Category");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex("IX_RomSets_Category", "RomSets");
+
+            migrationBuilder.DropColumn("Category", "RomSets");
+        }
+    }
+}
\ No newline at end of file
diff --git a/RomRepoMgr.Database/Migrations/ContextModelSnapshot.cs b/RomRepoMgr.Database/Migrations/ContextModelSnapshot.cs
index 85b8aa9..711b21c 100644
--- a/RomRepoMgr.Database/Migrations/ContextModelSnapshot.cs
+++ b/RomRepoMgr.Database/Migrations/ContextModelSnapshot.cs
@@ -221,6 +221,8 @@ namespace RomRepoMgr.Database.Migrations
 
                 b.Property<string>("Author").HasColumnType("TEXT");
 
+                b.Property<string>("Category").HasColumnType("TEXT");
+
                 b.Property<string>("Comment").HasColumnType("TEXT");
 
                 b.Property<DateTime>("CreatedOn").HasColumnType("TEXT");
@@ -245,6 +247,8 @@ namespace RomRepoMgr.Database.Migrations
 
                 b.HasIndex("Author");
 
+                b.HasIndex("Category");
+
                 b.HasIndex("Comment");
 
                 b.HasIndex("Date");
diff --git a/RomRepoMgr.Database/Models/RomSet.cs b/RomRepoMgr.Database/Models/RomSet.cs
index e478af2..c58cae8 100644
--- a/RomRepoMgr.Database/Models/RomSet.cs
+++ b/RomRepoMgr.Database/Models/RomSet.cs
@@ -40,7 +40,8 @@ namespace RomRepoMgr.Database.Models
         [Required]
         public string Filename { get; set; }
         [Required, StringLength(96, MinimumLength = 96)]
-        public string Sha384 { get; set; }
+        public string Sha384 { get;   set; }
+        public string Category { get; set; }
 
         public virtual ICollection<Machine> Machines { get; set; }
     }
diff --git a/RomRepoMgr/Resources/Localization.Designer.cs b/RomRepoMgr/Resources/Localization.Designer.cs
index b49fb0a..0283d64 100644
--- a/RomRepoMgr/Resources/Localization.Designer.cs
+++ b/RomRepoMgr/Resources/Localization.Designer.cs
@@ -704,5 +704,11 @@ namespace RomRepoMgr.Resources {
                 return ResourceManager.GetString("FilesystemMenuUmountText", resourceCulture);
             }
         }
+        
+        internal static string RomSetCategoryLabel {
+            get {
+                return ResourceManager.GetString("RomSetCategoryLabel", resourceCulture);
+            }
+        }
     }
 }
diff --git a/RomRepoMgr/Resources/Localization.resx b/RomRepoMgr/Resources/Localization.resx
index 4fddc39..1603050 100644
--- a/RomRepoMgr/Resources/Localization.resx
+++ b/RomRepoMgr/Resources/Localization.resx
@@ -349,4 +349,7 @@ Do you want to delete the file?</value>
   <data name="FilesystemMenuUmountText" xml:space="preserve">
     <value>_Umount</value>
   </data>
+  <data name="RomSetCategoryLabel" xml:space="preserve">
+    <value>Category</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/RomRepoMgr/ViewModels/EditDatViewModel.cs b/RomRepoMgr/ViewModels/EditDatViewModel.cs
index 55747a4..9ea8835 100644
--- a/RomRepoMgr/ViewModels/EditDatViewModel.cs
+++ b/RomRepoMgr/ViewModels/EditDatViewModel.cs
@@ -40,6 +40,7 @@ namespace RomRepoMgr.ViewModels
         readonly RomSetModel _romSet;
         readonly EditDat     _view;
         string               _author;
+        string               _category;
         string               _comment;
         string               _date;
         string               _description;
@@ -56,6 +57,7 @@ namespace RomRepoMgr.ViewModels
             _version      = romSet.Version;
             _author       = romSet.Author;
             _comment      = romSet.Comment;
+            _category     = romSet.Category;
             _date         = romSet.Date;
             _description  = romSet.Description;
             _homepage     = romSet.Homepage;
@@ -67,6 +69,7 @@ namespace RomRepoMgr.ViewModels
         public string NameLabel               => Localization.RomSetNameLabel;
         public string VersionLabel            => Localization.RomSetVersionLabel;
         public string AuthorLabel             => Localization.RomSetAuthorLabel;
+        public string CategoryLabel           => Localization.RomSetCategoryLabel;
         public string CommentLabel            => Localization.RomSetCommentLabel;
         public string DateLabel               => Localization.RomSetDateLabel;
         public string DescriptionLabel        => Localization.RomSetDescriptionLabel;
@@ -146,6 +149,18 @@ namespace RomRepoMgr.ViewModels
             }
         }
 
+        public string Category
+        {
+            get => _category;
+            set
+            {
+                if(value != _category)
+                    Modified = true;
+
+                this.RaiseAndSetIfChanged(ref _category, value);
+            }
+        }
+
         public string Date
         {
             get => _date;
@@ -195,6 +210,7 @@ namespace RomRepoMgr.ViewModels
 
             romSetDb.Author      = Author;
             romSetDb.Comment     = Comment;
+            romSetDb.Category    = Category;
             romSetDb.Date        = Date;
             romSetDb.Description = Description;
             romSetDb.Homepage    = Homepage;
@@ -210,6 +226,7 @@ namespace RomRepoMgr.ViewModels
                 {
                     Author             = Author,
                     Comment            = Comment,
+                    Category           = Category,
                     Date               = Date,
                     Description        = Description,
                     Homepage           = Homepage,
diff --git a/RomRepoMgr/ViewModels/ImportDatFolderViewModel.cs b/RomRepoMgr/ViewModels/ImportDatFolderViewModel.cs
index f884f4f..4f69eb7 100644
--- a/RomRepoMgr/ViewModels/ImportDatFolderViewModel.cs
+++ b/RomRepoMgr/ViewModels/ImportDatFolderViewModel.cs
@@ -46,6 +46,7 @@ namespace RomRepoMgr.ViewModels
         bool                     _allFilesChecked;
         bool                     _canClose;
         bool                     _canStart;
+        string                   _category;
         string[]                 _datFiles;
         bool                     _isImporting;
         bool                     _isReady;
@@ -76,6 +77,7 @@ namespace RomRepoMgr.ViewModels
         }
 
         public string PathLabel      => Localization.PathLabel;
+        public string CategoryLabel  => Localization.RomSetCategoryLabel;
         public string FolderPath     { get; }
         public string AllFilesLabel  => Localization.AllFilesLabel;
         public string RecursiveLabel => Localization.RecursiveLabel;
@@ -184,6 +186,12 @@ namespace RomRepoMgr.ViewModels
             set => this.RaiseAndSetIfChanged(ref _isImporting, value);
         }
 
+        public string Category
+        {
+            get => _category;
+            set => this.RaiseAndSetIfChanged(ref _category, value);
+        }
+
         [NotNull]
         public string Title => Localization.ImportDatFolderTitle;
 
@@ -286,7 +294,7 @@ namespace RomRepoMgr.ViewModels
             StatusMessage = string.Format(Localization.ImportingItem, Path.GetFileName(_datFiles[_listPosition]));
             ProgressValue = _listPosition;
 
-            var _worker = new DatImporter(_datFiles[_listPosition]);
+            var _worker = new DatImporter(_datFiles[_listPosition], Category);
             _worker.ErrorOccurred            += OnWorkerOnErrorOccurred;
             _worker.SetIndeterminateProgress += OnWorkerOnSetIndeterminateProgress;
             _worker.SetMessage               += OnWorkerOnSetMessage;
diff --git a/RomRepoMgr/ViewModels/ImportDatViewModel.cs b/RomRepoMgr/ViewModels/ImportDatViewModel.cs
index 4d847bb..b2ac930 100644
--- a/RomRepoMgr/ViewModels/ImportDatViewModel.cs
+++ b/RomRepoMgr/ViewModels/ImportDatViewModel.cs
@@ -57,7 +57,7 @@ namespace RomRepoMgr.ViewModels
             IndeterminateProgress            =  true;
             ProgressVisible                  =  false;
             ErrorVisible                     =  false;
-            _worker                          =  new DatImporter(datPath);
+            _worker                          =  new DatImporter(datPath, null);
             _worker.ErrorOccurred            += OnWorkerOnErrorOccurred;
             _worker.SetIndeterminateProgress += OnWorkerOnSetIndeterminateProgress;
             _worker.SetMessage               += OnWorkerOnSetMessage;
diff --git a/RomRepoMgr/ViewModels/MainWindowViewModel.cs b/RomRepoMgr/ViewModels/MainWindowViewModel.cs
index b00ae92..d862354 100644
--- a/RomRepoMgr/ViewModels/MainWindowViewModel.cs
+++ b/RomRepoMgr/ViewModels/MainWindowViewModel.cs
@@ -73,6 +73,7 @@ namespace RomRepoMgr.ViewModels
         public string RomSetNameLabel => Localization.RomSetNameLabel;
         public string RomSetVersionLabel => Localization.RomSetVersionLabel;
         public string RomSetAuthorLabel => Localization.RomSetAuthorLabel;
+        public string RomSetCategoryLabel => Localization.RomSetCategoryLabel;
         public string RomSetDateLabel => Localization.RomSetDateLabel;
         public string RomSetDescriptionLabel => Localization.RomSetDescriptionLabel;
         public string RomSetCommentLabel => Localization.RomSetCommentLabel;
diff --git a/RomRepoMgr/ViewModels/SplashWindowViewModel.cs b/RomRepoMgr/ViewModels/SplashWindowViewModel.cs
index a071f85..6b9c84d 100644
--- a/RomRepoMgr/ViewModels/SplashWindowViewModel.cs
+++ b/RomRepoMgr/ViewModels/SplashWindowViewModel.cs
@@ -352,7 +352,8 @@ namespace RomRepoMgr.ViewModels
                                                          r.Machines.Sum(m => m.Medias.Count(f => f.Media.IsInRepo)),
                                               MissRoms = r.Machines.Sum(m => m.Files.Count(f => !f.File.IsInRepo)) +
                                                          r.Machines.Sum(m => m.Disks.Count(f => !f.Disk.IsInRepo)) +
-                                                         r.Machines.Sum(m => m.Medias.Count(f => !f.Media.IsInRepo))
+                                                         r.Machines.Sum(m => m.Medias.Count(f => !f.Media.IsInRepo)),
+                                              Category = r.Category
                                           }).ToList()
                     });
 
diff --git a/RomRepoMgr/Views/EditDat.xaml b/RomRepoMgr/Views/EditDat.xaml
index d465e36..726467c 100644
--- a/RomRepoMgr/Views/EditDat.xaml
+++ b/RomRepoMgr/Views/EditDat.xaml
@@ -40,7 +40,7 @@
                 <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
                 <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
                 <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
-                <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
             </Grid.RowDefinitions>
             <Grid Grid.Row="0">
                 <Grid.ColumnDefinitions>
@@ -70,6 +70,15 @@
                          Text="{Binding Author}" Padding="5" />
             </Grid>
             <Grid Grid.Row="3">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
+                </Grid.ColumnDefinitions>
+                <TextBlock Grid.Column="0" HorizontalAlignment="Right" VerticalAlignment="Center"
+                           Text="{Binding CategoryLabel}" FontWeight="Bold" Padding="5" />
+                <TextBox Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center"
+                         Text="{Binding Category}" Padding="5" />
+            </Grid>
+            <Grid Grid.Row="4">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -78,7 +87,7 @@
                 <TextBox Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center"
                          Text="{Binding Comment}" Padding="5" />
             </Grid>
-            <Grid Grid.Row="4">
+            <Grid Grid.Row="5">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -87,7 +96,7 @@
                 <TextBox Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center" Text="{Binding Date}"
                          Padding="5" />
             </Grid>
-            <Grid Grid.Row="5">
+            <Grid Grid.Row="6">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -96,7 +105,7 @@
                 <TextBox Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center"
                          Text="{Binding Description}" Padding="5" />
             </Grid>
-            <Grid Grid.Row="6">
+            <Grid Grid.Row="7">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -105,7 +114,7 @@
                 <TextBox Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center"
                          Text="{Binding Homepage}" Padding="5" />
             </Grid>
-            <Grid Grid.Row="7">
+            <Grid Grid.Row="8">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -114,7 +123,7 @@
                 <TextBlock Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center"
                            Text="{Binding TotalMachines}" Padding="5" />
             </Grid>
-            <Grid Grid.Row="8">
+            <Grid Grid.Row="9">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -123,7 +132,7 @@
                 <TextBlock Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center"
                            Text="{Binding CompleteMachines}" Padding="5" />
             </Grid>
-            <Grid Grid.Row="9">
+            <Grid Grid.Row="10">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -132,7 +141,7 @@
                 <TextBlock Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center"
                            Text="{Binding IncompleteMachines}" Padding="5" />
             </Grid>
-            <Grid Grid.Row="10">
+            <Grid Grid.Row="11">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -141,7 +150,7 @@
                 <TextBlock Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center"
                            Text="{Binding TotalRoms}" Padding="5" />
             </Grid>
-            <Grid Grid.Row="11">
+            <Grid Grid.Row="12">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -150,7 +159,7 @@
                 <TextBlock Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center"
                            Text="{Binding HaveRoms}" Padding="5" />
             </Grid>
-            <Grid Grid.Row="12">
+            <Grid Grid.Row="13">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="140" /> <ColumnDefinition Width="*" />
                 </Grid.ColumnDefinitions>
@@ -159,7 +168,7 @@
                 <TextBlock Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center"
                            Text="{Binding MissRoms}" Padding="5" />
             </Grid>
-            <StackPanel Grid.Row="13" Orientation="Horizontal" HorizontalAlignment="Right">
+            <StackPanel Grid.Row="14" Orientation="Horizontal" HorizontalAlignment="Right">
                 <Button HorizontalAlignment="Right" VerticalAlignment="Center" Command="{Binding SaveCommand}"
                         IsVisible="{Binding Modified}">
                     <TextBlock Text="{Binding SaveLabel}" />
diff --git a/RomRepoMgr/Views/ImportDatFolder.xaml b/RomRepoMgr/Views/ImportDatFolder.xaml
index 13542b2..2de48aa 100644
--- a/RomRepoMgr/Views/ImportDatFolder.xaml
+++ b/RomRepoMgr/Views/ImportDatFolder.xaml
@@ -38,31 +38,40 @@
             <Grid.RowDefinitions>
                 <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
                 <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
-                <RowDefinition Height="*" /> <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" /> <RowDefinition Height="*" /> <RowDefinition Height="Auto" />
             </Grid.RowDefinitions>
             <StackPanel Grid.Row="0" Orientation="Horizontal" HorizontalAlignment="Stretch">
                 <TextBlock Text="{Binding PathLabel}" FontWeight="Bold" /> <TextBlock Text="{Binding FolderPath}" />
             </StackPanel>
-            <CheckBox Grid.Row="1" IsChecked="{Binding AllFilesChecked}" IsEnabled="{Binding IsReady}">
+            <Grid Grid.Row="1">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="*" />
+                </Grid.ColumnDefinitions>
+                <TextBlock Grid.Column="0" HorizontalAlignment="Right" VerticalAlignment="Center"
+                           Text="{Binding CategoryLabel}" FontWeight="Bold" Padding="5" />
+                <TextBox Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center"
+                         Text="{Binding Category}" Padding="5" />
+            </Grid>
+            <CheckBox Grid.Row="2" IsChecked="{Binding AllFilesChecked}" IsEnabled="{Binding IsReady}">
                 <CheckBox.Content>
                     <TextBlock Text="{Binding AllFilesLabel}" />
                 </CheckBox.Content>
             </CheckBox>
-            <CheckBox Grid.Row="2" IsChecked="{Binding RecursiveChecked}" IsEnabled="{Binding IsReady}">
+            <CheckBox Grid.Row="3" IsChecked="{Binding RecursiveChecked}" IsEnabled="{Binding IsReady}">
                 <CheckBox.Content>
                     <TextBlock Text="{Binding RecursiveLabel}" />
                 </CheckBox.Content>
             </CheckBox>
-            <TextBlock Grid.Row="3" Text="{Binding StatusMessage}" FontWeight="Bold" HorizontalAlignment="Center" />
-            <ProgressBar Grid.Row="4" Minimum="{Binding ProgressMinimum}" Maximum="{Binding ProgressMaximum}"
+            <TextBlock Grid.Row="4" Text="{Binding StatusMessage}" FontWeight="Bold" HorizontalAlignment="Center" />
+            <ProgressBar Grid.Row="5" Minimum="{Binding ProgressMinimum}" Maximum="{Binding ProgressMaximum}"
                          Value="{Binding ProgressValue}" IsIndeterminate="{Binding ProgressIsIndeterminate}"
                          IsVisible="{Binding ProgressVisible}" />
-            <StackPanel Grid.Row="5" IsVisible="{Binding Progress2Visible}">
+            <StackPanel Grid.Row="6" IsVisible="{Binding Progress2Visible}">
                 <TextBlock Text="{Binding Status2Message}" />
                 <ProgressBar Minimum="{Binding Progress2Minimum}" Maximum="{Binding Progress2Maximum}"
                              Value="{Binding Progress2Value}" IsIndeterminate="{Binding Progress2IsIndeterminate}" />
             </StackPanel>
-            <DataGrid Grid.Row="6" Items="{Binding ImportResults}" HorizontalScrollBarVisibility="Visible"
+            <DataGrid Grid.Row="7" Items="{Binding ImportResults}" HorizontalScrollBarVisibility="Visible"
                       IsVisible="{Binding IsImporting}">
                 <DataGrid.Columns>
                     <DataGridTextColumn Binding="{Binding Filename}" Width="Auto" IsReadOnly="True">
@@ -77,7 +86,7 @@
                     </DataGridTextColumn>
                 </DataGrid.Columns>
             </DataGrid>
-            <StackPanel Grid.Row="7" Orientation="Horizontal" IsVisible="{Binding IsReady}" HorizontalAlignment="Right">
+            <StackPanel Grid.Row="8" Orientation="Horizontal" IsVisible="{Binding IsReady}" HorizontalAlignment="Right">
                 <Button HorizontalAlignment="Right" VerticalAlignment="Center" IsEnabled="{Binding CanClose}"
                         Command="{Binding CloseCommand}">
                     <TextBlock Text="{Binding CloseLabel}" />
diff --git a/RomRepoMgr/Views/MainWindow.xaml b/RomRepoMgr/Views/MainWindow.xaml
index 077e7f2..4fa652e 100644
--- a/RomRepoMgr/Views/MainWindow.xaml
+++ b/RomRepoMgr/Views/MainWindow.xaml
@@ -69,6 +69,11 @@
                                 <TextBlock Text="{Binding RomSetAuthorLabel}" />
                             </DataGridTextColumn.Header>
                         </DataGridTextColumn>
+                        <DataGridTextColumn Binding="{Binding Category}" Width="Auto" IsReadOnly="True">
+                            <DataGridTextColumn.Header>
+                                <TextBlock Text="{Binding RomSetCategoryLabel}" />
+                            </DataGridTextColumn.Header>
+                        </DataGridTextColumn>
                         <DataGridTextColumn Binding="{Binding Date}" Width="Auto" IsReadOnly="True">
                             <DataGridTextColumn.Header>
                                 <TextBlock Text="{Binding RomSetDateLabel}" />