diff --git a/OpenRa.FileFormats/OpenRa.FileFormats.csproj b/OpenRa.FileFormats/OpenRa.FileFormats.csproj
index 7e9d06b0c7..57a2d72322 100644
--- a/OpenRa.FileFormats/OpenRa.FileFormats.csproj
+++ b/OpenRa.FileFormats/OpenRa.FileFormats.csproj
@@ -65,6 +65,7 @@
     <Compile Include="Palette.cs" />
     <Compile Include="PlayerColorRemap.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Session.cs" />
     <Compile Include="ShpReader.cs" />
     <Compile Include="ShroudPaletteRemap.cs" />
     <Compile Include="SingleColorRemap.cs" />
diff --git a/OpenRa.FileFormats/Session.cs b/OpenRa.FileFormats/Session.cs
new file mode 100644
index 0000000000..9fd9b24c57
--- /dev/null
+++ b/OpenRa.FileFormats/Session.cs
@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenRa.FileFormats
+{
+	public class Session
+	{
+		public List<Client> Clients = new List<Client>();
+		public string Map = "scm12ea.ini";
+		// public string[] Mods = { };
+	}
+
+	public enum ClientState
+	{
+		NotReady,
+		// Downloading,
+		// Uploading,
+		Ready
+	}
+
+	public class Client
+	{
+		public int Index;
+		public int Palette;
+		public int Race;
+		// public int SpawnPoint;
+		public string Name;
+		public ClientState State;
+	}
+}