Retro Game Cheats for 18 Wheeler (Gamecube)
Effect: Unlock bonus parking level
When:
During the game
How:
Successfully complete each of the four parking levels to unlock an additional parking level.
Submitted By:
Unknown
Effect: Unlock sixth parking level
When:
During the game
How:
Successfully complete the bonus parking level to unlock a sixth parking level.
Submitted By:
Unknown
Effect: Unlock Nippon Maru
Effect: Get Bonus Trailers
When:
Arcade Mode
How:
Once you've got Nippon Maru, select it, and complete arcade mode with all 4 characters. You'll unlock two bonus trailers in score attack mode, versus mode, and arcade mode.
Submitted By:
Effect: Bonus parking levels
When:
During The Game
How:
Successfully complete each of the four parking levels to unlock an additional parking level. Successfully complete the bonus parking level to unlock a sixth parking level.
Submitted By:
Unknown