If anyone wants to try their hand at mapping a 3D game, may I suggest this wonderful title?
If anyone here is unfamiliar with this game, I would compare it gameplay-wise to a Zelda game. You have a single large world, but you can only explore certain parts. As you go through the game you get new abilities and open new areas, and find new dungeons with new bosses to fight. Overall it plays linearly with a progressing storyline.
Also, the game is charming and funny. It has a lighthearted setting with food-related names and doesn't take itself too seriously.
Try to get a real copy because for some reason some emulators don't draw the speech bubbles right.