Ausgerechnet Mamph Pamph!

Excellent cooking game in a fantasy setting, where you are a creature that has to cook well for its master. But the game contains a blind alley where the player can't advance -- except he knows some debugging commands because the game has been published as testing release. So it's not really playable for standard players, anyway it has a large object world to explore, it's very humorous and contains funny puzzles (Spoiler - click to show)including the walk through the digestive system of the master in one dead end or using a gas mask to handle Corsican cheese. Jumping over the fatal error, it's one of the best German language Games I ever played.