Road Champs - BXS Stunt Biking - Platform: Gameboy Color

Cheat mode
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Enter PG7. As a password to unlock everything, with nothing completed.

All modes
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Enter QGF7 as a password to unlock training, career and tournament modes.

Super passwords
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Enter TH0D as a password to have training level 1 completed. 
Enter THBH as a password to have training level 2 completed. 
Enter SH6K as a password to have training level 3 completed. 
Enter SHJN as a password to have training level 4 completed. 
Enter SHWQ as a password to have training level 5 completed. 
Enter TC4D as a password to unlock more levels and the BMX Superbike. 
Enter SBPN as a password to unlock most levels.
Enter RHQT as a password or SBCT to unlock career mode. 
Enter RBKZ as a password to unlock some career mode levels. 
Enter PGT9 as a password to unlock all options (tournament, career, etc.) 
and everything completed except for four levels in tournament mode.
Enter PK.4 to unlock all levels.