Additional Difficulty Levels At the difficulty selection screen, repeatedly press Left to access the "Very Easy" setting or repeatedly press Right to access the "Very Hard" setting.
All Artifacts Enter "ICHEAT" as a name. Then while playing a game, press Up, C-Down, C-Right, Z, Up, Left.
All Weapons Enter "ICHEAT" as a name. Then while playing a game, press A, Right, C-Down, C-Right, C-Up, A, Left.
Black Adam Enter "ICHEAT" as a name. Then while playing a game, press C-Left, C-Right, A, C-Down, C-Right, Left.
Dancer Enter "ICHEAT" as a name. Then while playing a game, press Down, Up, C-Up, Down, C-Right, C-Right.
Fat Legged Aliens Enter "ICHEAT" as a name. Then while playing a game, press Left, A, Right, Down. Repeat the code to disable it.
Kill Adam Enter "ICHEAT" as a name. Then while playing a game, press B, Left, C-Right, C-Right, Down.
Mutant Alien Enter "ICHEAT" as a name. Then while playing a game, press C-Down, Up, Z(2), C-Right, Right. Enabling this cheat while facing a harvester will transform that alien into a mutant. Repeat the code to disable it.
Restore Health And Fuel Enter "ICHEAT" as a name. Then while playing a game, press Down, Up, Right, A, B, Left, C-Right.
Short Adam Enter "ICHEAT" as a name. Then while playing a game, press Down, C-Left, A, Right, Z.
Smart Bomb Enter "ICHEAT" as a name. Then, press A, C-Up, C-Up, Up, Left.
Surreal Mode Enter "ICHEAT" as a name. Then while playing a game, press C-Down, Up, Right(2), C-Right, A, Left to make the buildings jump. Repeat the code to disable it.
Tall Adam Enter "ICHEAT" as a name. Then while playing a game, press B, A, C-Up, A, C-Up, A.
Weak Boss Enter "ICHEAT" as a name. Then while playing a game, press Z, C-Right, C-Right, B, Left, C-Right.
Weapons Power-up Enter "ICHEAT" as a name. Then while playing a game, press C-Down, C-Up, Up, Z(2), Left, C-Right.
