To get better weapons in multi-player collect 15 or more of a weapon and press A and B at the same time. You will fire a modified blast of the weapon you fire. This code doesn't work with grenades.
Enter these at the input code screen.
| Cheat | Enter |
| All Weapons | PLVRZM |
| Frog Mode | FRGZ |
| Hurl Mode | HVRL |
| Invincibility | MSTSRVV |
| Invisible Tanks | CRSTLCLR |
| Bonus Gang in Multiplayer Mode | WMNRSMRTR |
| Choose Gang in Campaign Mode | LTSLTSGNGS |
| Storm Ravens Gang | WMNRSMRTR |
| *Warp to State Street | CJSKPFLGMH |
* A controller pack will not allow you to warp to state street so take it out.
| Level | Enter | Level | Enter |
| 1 | FRHBWNTNTK | 8 | WHSNKNFRGS |
| 2 | LHTTTBKRLS | 9 | CRFPHGCTKP |
| 3 | RCJRWPCLGM | 10 | HHRBKPVWGB |
| 4 | VVSLGGVHRF | 11 | WFHMKCFWLB |
| 5 | LPFFLNHJJF | 12 | SPLJTFLRFS |
| 6 | CTMGPRWGBH | 13 | LTSLTSGNGS |
| 7 | HPJMKGMCJV |