Dungeon Keeper

To get all creatures, building, traps
At the main menu screen type: please give all

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.

Extra money - During game play press Control, Alt, and C. Then
type in "show me the money".

Modify Cheat - Go into the data file, then open up the creature
file and you can change information about creatures and spells
around. EG you can change the imp spell to where imps cost
nothing.

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