The requirement of a certain resolution above 1024x768 is actually annoying.

After installing the game, I changed the resolution back to 1024x768, and startet the game. That worked for me. Hope this helps.

http://www.puppenheim.org/
http://www.wuerfels-welt.de
Old Game Tutorial: http://www.puppenheim.org/MITutorial.zip
Free Game Editor: http://puppenheim.org/AlienalsWeihnachtsmann.zip
http://www.puppenheim.org/blender_starting_main_settings.txt