18 Wheeler: American Pro Trucker Cheats

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.

Finish the four parking levels to unlock a fifth parking level. If you finsih that as well, you will unlock a sixth parking level as well.

At the title screen, hold X and press Start. Don't release X until the mode selection screen appears -or- Beat the game with all four characters to unlock the Nippon Maru.

18 Wheeler: American Pro Trucker Unlockables:

At the title screen hold X and press START. Continue to hold X to the Mode Select.

Finish arcade mode with all four characters to unlock two bonus trailers in score attack mode, versus mode, and arcade mode

On the main menu select VERSUS, pick your truck and trailer and then press "a" Select Sea Side 1 as your game level, press "a", start of and when you get to and old ruddy looking building with a big garage crash it and it will say *Special* 1000 points