Cheat mode:
Hold Start on controller two while the game loads a level, until the first game screen appears. Then, press L1, R1, R2, L1, Select, Start at the main menu or while game play is paused to enable cheat mode. Menu options for campaigns 2 and 3 will be unlocked, and the following codes may now be enabled.

God mode
Press Triangle on controller two during game play. Note: This also reveals all hidden objects.

Unlimited power
Press Circle on controller two during game play.

Level skip
Press Select on controller two during game play.

All items
Press X on controller two during game play.

Super unit strength
Press Up on controller two during game play.

Weak unit strength
Press Right on controller two during game play.

Current research completed
Press Down on controller two during game play.

Additional structures
Press R1 on controller two during game play.

Additional units
Press R2 on controller two during game play.