18 Wheeler: American Pro Trucker
At the main menu, hold L and press A, Y, X, B, Left, Start to unlock all trucks, all tracks, and disable the timer.
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.
Successfully complete arcade mode with all four characters to unlock Nihonmaru.
| Master Code First (Must Be On) [Note 1] | 9C5D88F8 |
| Master Code Last (Must Be On) [Note 2] | 245EECA9 |
| Max Money | 6A8C7632 05F5E0FF |
Note 1: This code must be the first code in the list of Game Shark codes entered for this game.
Note 2: This code must be the last code in the list of Game Shark codes entered for this game. If more codes are entered after this code, then this code must be deleted and moved to the bottom of the list of Game Shark codes for this game again.
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