- 13 single-player levels, with 7 completely playable- Multiplayer is missing from this build- The back-up file currently only works on the KiGB emulator and Bung Doctor GB Card flash cartridgesAn INSANE amount of work went into hunting this game down, piecing it together and getting it to work via emulator. If you want to check out a piece of GBC history that never got the chance to hit retail, hit up the link below!