Thank you for the suggestions, I will look for them and download as many as I can.
I tried the following (adding it to the general-section?) sadly to no effect:
"Edit attract.cfg > hide_console yes"It was already set to:
"TAB > General > Window Mode : Fullscreen Mode"This worked great for Frogatto:
-use fullscreen parameters of game (instead of window-mode)
some games uses their own parameters setting fullscreen & so it doesn't loose focus anymore
edit your_game.bat > your_game.exe -fullscreen_parameter_of_your_game However, the games still reside behind AM (after a short loading screen surfaces and goes away).
Really weird, almost as weird as the fact that Spelunky Classic works fine but displays a crash box after having shut down.