Thanks! I would like to try it on the GB DMG and the MM+. The rumble version means just that? :)
Viewing post in Canyon Racer (Game Boy, Mega Duck, A.Pocket) comments
The rumble version means that it can produce rumble vibrations when run on MBC5 cartridges that have that feature. It's not very common (inside gadgets has one). I think only a few emulators support it (not sure which).
Otherwise canyon_racer_0.7.7_mbc5.gb is suitable for GB DMG and whatever other devices or emulators run GB Roms.