Are there any dungeon keeper cheats on PC

All creatures, building, traps - At the main menu screent type: please give all.

Modify Cheat - Go into the data file, then open up the creature file and you can change information about creatures and spells around. Ex: You can change the imp spell to where imps cost nothing.
Bonus Stage - There are several bonus stages in Dungeon Keeper, but one of them can be found without doing anything. To access it, set your PC's date to any day with a full moon then start the game. The bonus stage will appear as a flag with a circle in it.