diff --git a/Barotrauma/BarotraumaShared/SharedSource/Lua/LuaClasses.cs b/Barotrauma/BarotraumaShared/SharedSource/Lua/LuaClasses.cs
index 3c9d4326f..d1297c57a 100644
--- a/Barotrauma/BarotraumaShared/SharedSource/Lua/LuaClasses.cs
+++ b/Barotrauma/BarotraumaShared/SharedSource/Lua/LuaClasses.cs
@@ -64,7 +64,13 @@ namespace Barotrauma
 				}
 			}
 
-			
+			public GameSession GameSession
+			{
+				get
+				{
+					return GameMain.GameSession;
+				}
+			}
 
 			public void OverrideTraitors(bool o)
 			{
diff --git a/Barotrauma/BarotraumaShared/SharedSource/Lua/LuaSetup.cs b/Barotrauma/BarotraumaShared/SharedSource/Lua/LuaSetup.cs
index aed10729c..0f83f61b3 100644
--- a/Barotrauma/BarotraumaShared/SharedSource/Lua/LuaSetup.cs
+++ b/Barotrauma/BarotraumaShared/SharedSource/Lua/LuaSetup.cs
@@ -274,7 +274,9 @@ namespace Barotrauma
 			UserData.RegisterType<ServerSettings>();
 			UserData.RegisterType<PrefabCollection<ItemPrefab>>();
 			UserData.RegisterType<PrefabCollection<JobPrefab>>();
-
+			UserData.RegisterType<GameSession>();
+			UserData.RegisterType<CampaignMode>();
+			
 			lua = new Script(CoreModules.Preset_SoftSandbox);
 
 			lua.Options.DebugPrint = PrintMessage;