The following are known Action Replay Codes for Grand Theft Auto 2 on SEGA Dreamcast (Dreamcast). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

Have Inf Grenades
323110F3
0000012C

High Score + city complete
B01606A5
0000C9FF
E0BF24BC
00003B9A

Have Inf Stunrod
7B65E7B1
0000012C

Inf Lives
7B35EF25
00000005

Have Inf Electro gun
CE1BD34C
0000012C

Have Inf Shotgun
22E757F6
0000012C

Have Inf Silenced Machinegun
DE28B76C
0000012C

Have Inf Petrol Bombs
FC29A232
0000012C

Have Inf Pistol
47EA2B7D
000000C8

Have Inf Double Pistols
F1A9A235
0000012C

Inf Health
B63E08E2
00000064

In trouble with the Army
D880B1B0
00002EE0

Zero Felony meter
D880B1B0
00000000

Have Inf Machine gun
58E743E3
0000012C

Have Inf Rocket Launcher
76A5E7B6
0000012C

Have Inf Flamerthrower
9DE83E44
0000012C