Hi,
I found a bug with the Steam connection.
When you run AppGameKit via Steam, Steam tells you, that you are currently using "App Game Kit 2".
When you write and run a program/game made in AppGameKit and close that program again, Steam tells you, that you are currently "online" and don't use any program or game.
If you run the written program again, Steam tells you again that you are using "App Game Kit 2".
It seems, that the Steam integration of the written program ("Added Steam overlay to Windows interpreter when run from the IDE") doesn't return the "focus" of Steam back to AGK.