Cheat codes:
Enter the following codes in the "Enter Cheat" screen. Resume game play, then pause. Enter the cheat menu and set each enabled code as desired. All cheats entered can be saved after reaching a save point. 

The Big Cheat
Enter NTHGTHDGDCRTDTRK as a code. This will enable invincibility, all weapons, unlimited ammo, infinite lives, full map, big head, level skip, and warps (Long Hunter, Mantis, T-Rex, Campaigner). 

     All weapons
     Enter CMGTSMMGGTS as a code. 

     Unlimited ammo
     Enter BLLTSRRFRND as a code. 

     Disco mode
     Enter SNFFRR as a code. Colors will flash and the animals and people will dance. 

     Gallery
     Enter THBST as a code. Allows enemies to be viewed, scaled, and rotated in 3D. 

     Infinite lives
     Enter FRTHSTHTTRLSCK as a code. 

     Pen and ink mode
     Enter DLKTDR as a code. Graphics will be in black and white line art, similar to a sketchbook. 

     Robin's cheat
     Enter RBNSMTH as a code. Enables credits, big heads, all weapons, unlimited ammunition, and              invincibility. 

     Greg mode
     Enter GRGCHN as a code. Enables all the features of Robin's cheat except invincibility. 

     Dana's cheat
     Enter DNCHN as a code. All enemies will be smaller. 

     Display credits
     Enter FDTHMGS as a code. 

     Spirit mode
     Enter THSSLKSCL as a code. Enables invincibility with slow-moving enemies. 

     Show enemies
     Enter NSTHMNDNT as a code. Enemies will appear as red arrows on the map. 

     Purdy colors
     Enter LLTHCLRSFTHRNB as a code. The game environment will appear in rainbow colors      after the next cut-scene or using a teleport-portal. 

     Quack mode
     Enter CLLTHTNMTN as a code. The graphics and game animations will be degraded. 

     Flight mode
     Enter LKMBRD as a code. Then, press R or L to move up or down. 

Secret moves:
The following moves are not listed in the game's manual. 

    Side dash
     Quickly tap Strafe Left or Strafe Right twice, and Turok will do a quick hop and a slide to the left or the right. 

     Air jump
     Run or drop off of a ledge. The instant Turok begins to fall, press Jump. Note: If falling onto water, repeatedly press Jump to skip across the surface of the water. 

     Fully powered arrows
     Instead of rapidly firing one arrow after another, always count to two before releasing the trigger button. This way, the arrows will fly straighter and further. 

Hint: Force enemies to fight:
Get a dinosaur and a human, or a two animals that are not of the same species. Bring them together and run around them. Jump over them a few times and they will begin to fight.