【Rare】Super Mario 256 Worlds Secret Tricks Famicom Winning Guide Bug Boy

This is a book about the legendary cheat, 256 Worlds, from Super Mario, the greatest game on the Famicom.

This book details the cheat, which is considered one of the greatest in the history of video games worldwide, allowing players to access numerous mysterious stages through a technical trick involving swapping the Tennis cartridge. While there are signs of use as it was used at the time, it is a very valuable collector's item.