Every platform code for the all weapons cheat in Grand Theft Auto III, plus how to enter it.
GUNSGUNSGUNSR2, R2, L1, R2, LEFT, DOWN, RIGHT, UP, LEFT, DOWN, RIGHT, UPRT, RT, LB, RT, LEFT, DOWN, RIGHT, UP, LEFT, DOWN, RIGHT, UPPC: Type the code on your keyboard while in Grand Theft Auto III. There is no entry prompt — the cheat activates the moment the string is recognised.
PlayStation: Enter the button sequence on the in-game pad while Grand Theft Auto III is unpaused. There is no input prompt; the game registers the buttons in real time.
Xbox: Enter the button sequence on the in-game pad while Grand Theft Auto III is unpaused. There is no input prompt; the game registers the buttons in real time.
GTA III's PC version uses typed cheat words; PS2 and Xbox use button combos entered on the controller during gameplay. Codes shown are the original PS2/PC/Xbox set; the Definitive Edition re-releases preserve the original combos.
Cheats may disable trophies and achievements for the current play session on modern entries. Save in a free slot before experimenting.