Armorines: Project S.W.A.R.M. Cheats for PlayStation
Also on: GameBoy
At the 'Title' screen hold L2 + R2 and press Left, Down, Right, Up. If the code has been entered correctly the words 'Cheats On' will appear on the bottom right of the screen as confirmation. Start a game and select a level and you will have infinite ammunition and invinciblity when the game begins.