Jetpack : Game Cheats Various cheat codes These codes are debugging tools that the programmers left in. They are: TAB + 2 + S - Skip a Level TAB + 2 + L - Extra Life TAB + 2 + F - Full Fuel Refill TAB + 2 + I - Invincibility A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z