Found the bug with menu rendering... I didn't apply the workaround for menu screen, just for advertisement splashscreens and game screen.

@Czar and Robert

Could you please test if you are able see the menu now?

@Savage
I think I added joystick support to the game. Are you able to test it? I don't have a joystick, so it's hard for me to test *hehe*
Support is only in game right now! If you tell me it works I will add it to the menu, too!

EDIT: Added mouse support, too You can control the ship with your mouse now.

http://www.dino-it.de/gemchase_exe.zip

This URL is just the exe, so please overwrite it in the download from first post.

Thank you very much for all your efforts!!