Turok: Evolution

Master code:
Enter FMNFB as a code at the cheat menu.

Invincibility:
Enter EMERPUS as a code at the cheat menu.

All available weapons:
Enter TEXAS as a code at the cheat menu.
All weapons available in the current level will be unlocked.

Unlimited ammunition:
Enter MADMAN as a code at the cheat menu.

Level select:
Enter SELLOUT as a code at the cheat menu.
Load a saved game and all levels will be unlocked.

Invisibility:
Enter SLLEWGH as a code at the cheat menu.

Big head mode:
Enter HEID as a code at the cheat menu.

Zoo mode:
Enter ZOO as a code at the cheat menu.
You will be able to kill any animal in the game with the war club as a weapon.

Demo mode and target mini-game:
Enter HUNTER as a code at the cheat menu.
Besides starting demo mode, you will also be able to play the Target mini-game at the main title screen.
Use the D-pad to move the pointer and Fire to shoot.