Sonic the Hedgehog Genesis is a remake of the Sega Genesis version of Sonic the Hedgehog released to the Game Boy Advance. Despite being created in Japan, the game was released exclusively in America as part of the game's fifteenth anniversary. The game had very few additions to be considered a remake. For one there was an added Anniversary Mode that included the spin dash (which wasn't present in the original, but was in the games' sequels). The game was slightly more zoomed in, though some critics argued that it was still hard to see where Sonic was going.