* Cheats were not officially released by Rockstar Games. They were discovered by edisoncarter from GTA Forums by wiring the PS2 controller up to the PC's parallel port and trying numerous combinations at high speed. Needless to say, this is not recommended for people to try at home, since it also requires special software to make this work.

Quests through the source code of the game also reveal various hidden button codes for special cheats, yet the button combinations are up to the point of writing unknown. Perhaps we shall find out the combinations in the future, but for now these cheats can only be triggered with cheat devices. The unknown cheats include (but are not limited to):

• all cars with nitrous
• all cars with hydraulics
• infinite health
• infinite ammo
• infinite oxygen
• never wanted
• anyone can be recruited to your gang
• spawn Hunter
• spawn Dozer
• all streetlights "strobe" streetlights
• all cars turn into bikes / countryside cars / sports cars / special vehicles
• 'mission select' code (rumoured)