N. Sanity Island (Earth-6515)

N. Sanity Island is one of the three islands of the Wumpa Archipelago, and the main setting of the original two Sonic Hedgehog games, and has made small appearances across the other games. N. Sanity Island is a trove of gems and ancient ruins, as well as a native tribe. The island is also inhabited by several animals, as well as Sonic and his family and some friends.