Grand Theft Auto 2 PC cheats:
The best way to cheat in GTA2 is by using the game's built in debug menu. Import this registry key and then run GTA2 Manager. You should now have a debug tab with many checkboxes on it. The ones you might want are "Get All Weapons", "Player Invulnerable", "Keep Weapons After Death" and the best one "Do Debug Keys". When you have debug keys enabled, you can push C to display coordinates, 4 to increase wanted level, 5 to clear wanted level and 1, 2, 3 to change gang respect. Many of the debug keys use the numeric keypad, ". Del" to restore health, "0 Ins" to teleport, "/" to switch camera to a dummy vehicle, "-" to toggle fast forward, "+" to pause frame by frame, "7" to zoom out, "9" to zoom in, "2" to unlock camera and "5" to lock camera on player.
There are also name cheats. All of these cheats work on the free Rockstar classics version.
Before you start the game, you can enter a name for your character. The default name is "PLAYER 0", select it and push enter to rename. Change it to "GOURANGA", you should hear a chime and then change the name to any of the cheats that you want to enable. You can change it back to the name you want and start the game.
GOREFEST - Enable blood splats
MADEMAN - Max respect for all gangs at start
EATSOUP - Free Shopping (free vehicle weapons and resprays)
CUTIE1 - Gives the player 99 lives
ARSESTAR - Keep weapons after death
DANISGOD - Gives the player $200,000
MUCHCASH - Gives the player $500,000 (no chime sound, works without GOURANGA)
IAMDAVEJ - Gives the player $9,999,999
SEGARULZ - Gives the player a multiplier of 10
COCKTART - Skip exploding scores
DAVEMOON - Basic set of weapons + max ammo
GODOFGTA - All weapons + max ammo
VOLTFEST - Electro Gun with infinite ammo
FLAMEON - Flame Thrower with infinite ammo
SCHURULZ - Infinite 'double damage' powerup
RSJABBER - Infinite 'invulnerability' powerup
HUNSRUS - Infinite 'invisibility' powerup
BUCKFAST - All dummy chars are muggers
NEKKID - All dummy chars are naked
LASVEGAS - All dummy chars are Elvis
FISHFLAP - All cars are 'mini cars'
UKGAMER - Unlocks all main and bonus levels
TUMYFROG - Unlocks all main and bonus levels
New cheats discovered by vike on 2011/11/19:
GAOLLOT, HHUBEMAN, BARFXSEK, BSEKHACK - Infinite 'get out of jail free' cards
NMAPNOW, VIKEFRAT - Unlocks level two
NON WORKING CHEATS:
These don't work and have no chime sound. They are posted on many sites:
JAILBAIT - Infinite 'get out of jail free' cards
GINGERR - Unlocks level two
Most of these cheat codes were copied from gouranga.com and the rest were brute forced by vike.