Road Rash II (rev00) (Genesis)
ALHA-AA2E
Always level-up after a race. You normally have to finish all 5 tracks (in 3rd place or better) before you level-up. Works even if you finish in last place, get busted by the cops, or if your bike gets wrecked and blows up.
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After 20+ years, I was finally able to beat Road Rash II. Yay!
Some interesting findings. When you finish the game, there is a cut scene showing a helicopter picking up you and your girlfriend. The game then continues back to the menu screen. If you look at the password screen, it shows that you are on level eeeeee, and gives you a password: EVVU 6U0E. The "6" in the password means level 6 but there isn't an official level 6. I was able to get to level 6 with a Game Genie code years ago, but never knew if it was possible to get there by beating the game until now. Also, the password isn't accepted by the game. Bummer.
When you exit the password screen and start the game on level 6, you get to race against all the cops in the game. Pretty fun. Once you wreck or finish the race, the game freezes.