Jet Grind Radio Cheats

Alternate introduction sequence:
Tap A over and over again after turning on the game. You will hear the trademark SEGA scream instead of a short jingle when the logo appears.

Unlock Professor K:
Finish the game and save at the end. Professor K will now be unlocked between Garam and Beat in the character selection prompt.

Unlock Poison Jam:
Finish the Kogane-Cho levels with a JET rank.

Unlock the Love Shockers:
Finish the Shibuya-Cho levels with a JET rank.

Unlock the Noise Tanks:
Finish the Benten-Cho levels with a JET rank.