diff --git a/OpenRA.Game/Game.cs b/OpenRA.Game/Game.cs
index 310376c521..f1b9e2eec5 100644
--- a/OpenRA.Game/Game.cs
+++ b/OpenRA.Game/Game.cs
@@ -75,7 +75,7 @@ namespace OpenRA
 		static string TimestampedFilename(bool includemilliseconds = false)
 		{
 			var format = includemilliseconds ? "yyyy-MM-ddTHHmmssfffZ" : "yyyy-MM-ddTHHmmssZ";
-			return "OpenRA-" + DateTime.UtcNow.ToString(format, CultureInfo.InvariantCulture);
+			return ModData.Manifest.Id + "-" + DateTime.UtcNow.ToString(format, CultureInfo.InvariantCulture);
 		}
 
 		static void JoinInner(OrderManager om)