Type in the following codes at the console (press ~ to enter the console). After typing in a code, press Enter, then exit the console.
AllAmmo Full ammunition Fly Fly Mode Ghost No clipping/Walk through walls God God Mode Invisible 1/0 Invisibility - 1 activates, 0 deactivates Open XXXXXX Level Skip - Replace XXXXXX with any map name Walk Turn off Ghost or Fly modes SUMMON KLINGONS.XXXXXXX To summon weapons, items, or enemies, replace XXXXXX with any of the following names: AndorianBabe AndorianCaptain AndorianGrunt AndorianThress AntiGravBelt AssaultDisruptor AttackDroid AttackDroid1 AttackDroid2 Bat'leth B'Etor BigBoxAlien BigBoxKlingon BirdOfPrey BireQT BloodWine CargoShip CipherKey CombatArmor CombatGoggles Communicator D'kTagh DilithiumCell DWCaptain DWGrunt FlashGrenade Gagh GeneticKey GrenadeLauncher HERocketCase HGCaptain HGGrunt IceFish Korek Krax Lethian Lursa MagBoots MediKit MediPatch Nausican PalmKey ParticleCannon PasscardKey RetinalKey Ro'peD RPBeast RPCaptain RPGrunt SithHar SpinClaw StealthSuit TallBoxAlien TallBoxKlingon TarChop Targ Tricorder VacSuit Warden