Famicom exclusive game that's commonly found on pirate multi-carts as "Super Mario 8" with hacked in mario sprites. I've managed to find a few CIB copies but they go for around $80-100 which probably isn't bad but I'm not a CIB collector so I'd like to find out how much just a cart is. Haven't found any repro makers selling this surprisingly, I'm guessing it uses an uncommon mapper or something.