Duke Nukem: Time To Kill Enter one of the following codes while the game is paused: Invulnerability[Sent by Joe Valois] First pause the game and press:L2,R1,L1,R2,UP,DOWN,UP,DOWN,SELECT,SELECT. And it should say Invulnerability. Level Select: Press Down(9), Up {See Note Below} Note: After entering this code, exit the game. Then at the bottom of the main menu there will be a new option called "Time To Kill". Select this new option, then press Left or Right to choose a level and press X to go to the level. Select Powered-UpWeapons: Press Right(2), Left, Right(2), Left, Right(2), Left All Weapons: Press L1, L2, Up, L1, L2, Down, R1, Right, R2, Left All Items: Press R1(5), L2(5) All Keys: Press Up, Right, Up, Left, Down, Up, Right, Left, Right, Down Invincibility: Press L2, R1, L1, R2, Up, Down, Up, Down, Select(2) Temporary Invincibility: Press R1, L2, L1, L2, R1, L1, R1, L2, L1, L2 Invisibility: Press L1, R1, L1, R1, L1, R1, L1, R1, L1, R1 Infinite Ammo: Press [Left, Right, Left, Right, Select] twice Double Damage: Press L2, R2, L2, R2, L2, R2, L2, R2, L2, R2 Big Head Duke: Press R1(9), Up Small Head Duke: Press R1(9), Down Big Head Opponents: Press R1(9), Left Small Head Opponents: Press R1(9), Right Beat the Game While playing hold L2 + R2 then press Square, Triangle, Circle, Circle, Start View Rogue Trip FMV sequence At the GT Interactive logo during the opening sequence, press L1 + L2 + R1 + R2