While playing a game, hold G + O + D (simultaneously) to display the command line. Then, enter one of the following codes to activate the corresponding cheat function:

IMMORTAL - God Mode
MORTAL - God Mode Off
CAMERA - 3rd Person View On-foot
ALLAMMO - All On-foot Weapons have Max Ammo
TARGETS - Targeting for On-foot Weapons
DBDAMAGE - Double Damage when On-foot
RADAR - On-foot Radar
CW - All Car Ammo
CA - Full Armor
STONEAGE - Running Person in Place of Car
CAROFF - No Car Geometry
CARFLIP - Flip Car Geometry
CARREVERSE - Reverse Car Geometry
WHEELSOFF - Toggle Car Wheels
TEAMBEYOND - Beyond Games credit world
RETICLE - Reticle turns red when over target

GameTips
Tip 1 To escape quickly and get the most out of your ammo, drive backward and fire at pursuing enemies.
Tip 2 To make it easier on your fingers, create a custom control scheme for both on-foot and behind-the-wheel action.
Tip 3 Multiplayer tip: Drop mines near power-ups and blow up greedy opponents.