It is extremely frustrating to read that they did such newbie mistakes that I didn't even consider to do. tongue
But, even when you don't do mistakes, it is about the weak points of your decisions and skills that make the difference of fail or success.

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