A bootleg of MegaMan/RockMan World 5 for the Gameboy vs the real thing. The dead give-away is the blob on top of the IC on the cart on the right. What is also of note is that the cart shell is also slightly too thick. It fits in a standard Gameboy, but will not slide into an Analogue Pocket. Anyways, when I purchased this on ebay originally, it was sold as an authentic cart, and the seller was nice enough to reimburse me with no requirement to ship back.