diff --git a/Xbox/XMID.cs b/Xbox/XMID.cs
new file mode 100644
index 0000000..63799ef
--- /dev/null
+++ b/Xbox/XMID.cs
@@ -0,0 +1,49 @@
+namespace SabreTools.Models.Xbox
+{
+    /// <summary>
+    /// Contains information specific to an XGD disc
+    /// </summary>
+    /// <remarks>
+    /// XGD1 XMID Format Information:
+    ///
+    /// AABBBCCD
+    /// - AA        => The two-ASCII-character publisher identifier (see GetPublisher for details)
+    /// - BBB       => Game ID
+    /// - CC        => Version number
+    /// - D         => Region identifier (see GetRegion for details)
+    /// </remarks>
+    public class XMID
+    {
+        /// <summary>
+        /// 2-character publisher identifier
+        /// </summary>
+#if NET48
+        public string PublisherIdentifier { get; set; }
+#else
+        public string PublisherIdentifier { get; set; }
+#endif
+
+        /// <summary>
+        /// 3-character Game ID
+        /// </summary>
+#if NET48
+        public string GameID { get; set; }
+#else
+        public string? GameID { get; set; }
+#endif
+
+        /// <summary>
+        /// 2-character Internal version number
+        /// </summary>
+#if NET48
+        public string VersionNumber { get; set; }
+#else
+        public string? VersionNumber { get; set; }
+#endif
+
+        /// <summary>
+        /// 1-character Region identifier character
+        /// </summary
+        public char RegionIdentifier { get; set; }
+    }
+}
diff --git a/Xbox/XeMID.cs b/Xbox/XeMID.cs
new file mode 100644
index 0000000..3da8a63
--- /dev/null
+++ b/Xbox/XeMID.cs
@@ -0,0 +1,91 @@
+namespace SabreTools.Models.Xbox
+{
+    /// <summary>
+    /// Contains information specific to an XGD disc
+    /// </summary>
+    /// <remarks>
+    /// XGD2/3 XeMID Format Information:
+    ///
+    /// AABCCCDDEFFGHH(IIIIIIII)
+    /// - AA        => The two-ASCII-character publisher identifier (see GetPublisher for details)
+    /// - B         => Platform identifier; 2 indicates Xbox 360.
+    /// - CCC       => Game ID
+    /// - DD        => SKU number (unique per SKU of a title)
+    /// - E         => Region identifier (see GetRegion for details)
+    /// - FF        => Base version; usually starts at 01 (can be 1 or 2 characters)
+    /// - G         => Media type identifier (see GetMediaSubtype for details)
+    /// - HH        => Disc number stored in [disc number][total discs] format
+    /// - IIIIIIII  => 8-hex-digit certification submission identifier; usually on test discs only
+    /// </remarks>
+    public class XeMID
+    {
+        /// <summary>
+        /// 2-character publisher identifier
+        /// </summary>
+#if NET48
+        public string PublisherIdentifier { get; set; }
+#else
+        public string PublisherIdentifier { get; set; }
+#endif
+
+        /// <summary>
+        /// 1-character Platform disc is made for, 2 indicates Xbox 360
+        /// </summary>
+        public char PlatformIdentifier { get; set; }
+
+        /// <summary>
+        /// 3-character Game ID
+        /// </summary>
+#if NET48
+        public string GameID { get; set; }
+#else
+        public string? GameID { get; set; }
+#endif
+
+        /// <summary>
+        /// 2-character Title-specific SKU
+        /// </summary>
+#if NET48
+        public string SKU { get; set; }
+#else
+        public string? SKU { get; set; }
+#endif
+
+        /// <summary>
+        /// 1-character Region identifier character
+        /// </summary>
+        public char RegionIdentifier { get; set; }
+
+        /// <summary>
+        /// 2-character Base version of executables, usually starts at 01
+        /// </summary>
+#if NET48
+        public string BaseVersion { get; set; }
+#else
+        public string? BaseVersion { get; set; }
+#endif
+
+        /// <summary>
+        /// 1-character Media subtype identifier
+        /// </summary>
+        public char MediaSubtypeIdentifier { get; set; }
+
+        /// <summary>
+        /// 2-character Disc number stored in [disc number][total discs] format
+        /// </summary>
+#if NET48
+        public string DiscNumberIdentifier { get; set; }
+#else
+        public string? DiscNumberIdentifier { get; set; }
+#endif
+
+        /// <summary>
+        /// 8-hex-digit certification submission identifier; usually on test discs only
+        /// </summary>
+#if NET48
+        public string CertificationSubmissionIdentifier { get; set; }
+#else
+        public string? CertificationSubmissionIdentifier { get; set; }
+#endif
+    }
+}