Enter "ICHEAT" as a name. Then during game play hit the
following button combinations:
Change Adam to black: C-Left, C-Right, A, C-Down, C-Right, Left.
Dancer: Down, Up, C-Up, Down, C-Right, C-Right.
Fat aliens: Left, A, Right, Down. Repeat the code to disable it.
Get smart bomb: A, C-Up, C-Up, Up, Left.
Get weapons power-up: C-Down, C-Up, Up, Z, Z, Left, C-Right.
Kill Adam: B, Left, C-Right, C-Right, Down.
Mutant alien: C-Down, Up, Z, Z, C-Right, Right.
Refill health and fuel: Down, Up, Right, A, B, Left, C-Right.
Change Adam to short: Down, C-Left, A, Right, Z.
Surreal mode: C-Down, Up, Right, Right, C-Right, A, Left
Change Adam to tall: B, A, C-Up, A, C-Up, A.
Unlock artifacts: Up, C-Down, C-Right, Z, Up, Left.
Unlock weapons: A, Right, C-Down, C-Right, C-Up, A, Left.
Weak Boss: Z,C-Right, C-Right, B, Left, C-Right.
More difficulty settings:
Go to difficulty selection menu, press Left several time
to change the difficulty to "Very Easy" or press Right several times
to change to "Very Hard" setting.
