Yu Yu Hakusho: Spirit Detective Cheats

Unlock Genkai:
After you defeat Toguro for the final time with Kuwabara, Rando and Suzaku fight you. After beating them, Tarukane will fight you. He is very easy to defeat. After you defeat him, you can play as Genkai in tournament mode.

Mini-game room:
Win tournament mode as Genkai.

Teleport over ledges:
Hiei can teleport over ledges as long as he cannot see the wall that supports them. Just stand next to the ledge and press B.