Duke Nukem 3D

DNSCOTTY###: level warp (#=episode (1-3), ##-level)
DNCORNHOLIO: god mode, unlimited jet pack
DNKROZ: some as the one above
DNSTUFF: max ammo, all weponskeys, and invontory items
DNITEMS: all inventory items and keys
DNWEAPONS: all wepons, max ammo
DNKEYS: all keys
DNSHOWMAP: displays all of the map