"The trouble island of potato"?
That sounds a lot like Slime Forest Adventure, where the home island is called Jagaimo "じゃが芋" (potato). Is this what you are actually playing? If so, I hope it helps you as much as it helped me. ^^
SFA is more like NES style graphics rather than N64, maybe SNES graphics at best. You still sound young by saying N64. :P
August 10, 2015 at 2:03am