BattleTanx

All Weapons
To start with all weapons, enter the password PLVRZM.

Area 51 Warp
In the multiplayer Area 51 level there is a UFO. If you shoot the UFO you get this cool gyrating light show. In between the upper left and upper right corners is another UFO. If you blow both of them up and drive into the light show you can warp between the two points.

Better Weapons
To get better weapons in multi-player collect 15 or more of a weapon and press A+B at the same time. You will fire a modified blast of the weapon you fire. This code doesn't work with grenades.

Choose Gang in Campaign Mode
Go to input code, then type in LTSLTSGNGS. Select campaign mode and you should be able to select your gang.

Free Camera Mode / Lookout
In Anihilation (Mode must be earned) start a two player game and have two computers enabled. You can be on whatever team, whatever clan, etc. Play the game normaly but have someone die very quickly (lose whole team) and the other person stay alive.

When it says "LOSER" on your screen it should be still, not circling like usual. If you move your analog stick, you can either take a tour of the streets, follow the other player and be a lookout, or just watch the action as it develops!

Hurl Mode
For a constantly spinning screen, enter the password HVRL.

Invincibility
For invulnerable tanks, enter the password MSTSRVV.

Invisible Tanks
For invisible tanks, enter the password CRSTLCLR.

Passwords

Level  Passcode
1      FRHBWNTNTK
2      LHTTTBKRLS
3      RCJRWPCLGM
4      VVSLGGVHRF       
5      LPFFLNHJJF
6      CTMGPRWGBH
7      HPJMKGMCJV
8      WHSNKNFRGS
9      CRFPHGCTKP
10     HHRBKPVWGB
11     WFHMKCFWLB
12     SPLJTFLRFS
13     LTSLTSGNGS

Plague of Frogs
Their green, they jump, and their eaten in France. Just go to the code entry screen, type in FRGZ, and you will be up to your neck in frogs.

Run Story
For Run Story mode (what does this do?), enter the password CDPLT.

Self-Destruct
To blow up your tank press and hold all four C-buttons. This can be helpful if you want a different tank in Deathmatch.

Storm Ravens Gang
Enter WMNRSMRTR as a password. The all-women Storm Ravens game, with laser and cloak power-up will be selectable in multiplayer mode.

Toad Mode
To turn the queenlords into toads, enter the password TDZ.

Trippy Mode
For an interesting change of scenery, enter the password CNCTHRTM.

Unlimited Ammo
For unlimited ammo, enter the password LTSFBLLTS.

Unlimited Lives
For infinite lives, enter the password LVFRVR.