Fusion, each having its own theme and scope of games. They also will
have multiple stages in each world, with levels like the classic
Fortress levels from Super Mario Bros. 3 and the Switch Palaces from
Super Mario World.
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World 2: Alternate Earth (Military War Zone and other real-world locations)
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World 3: Mega Man’s World (Levels based on those of the original Mega Man series)
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World 4: The Demon Realm (Levels based on DOOM, Castlevania, and Ghouls and Ghosts)
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World 5: Ocean of Oblivion (Lair of the Leviathan goes here, along with surreal swimming levels)
World 6: SHMUPS Domain (Sky Pop and Marine Pop-only levels. Expect levels based on Gradius and R-Type)
World 7: Realm of Nintendo (Levels based on and featuring Link, Samus, Kirby, Donkey Kong, and more)
World 8: Sonic’s World
World 9: Halo Ringworld (features Halo characters and enemies)
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World -1: Twisted Reality (comparable to Kingdom Hearts II’s World That Never Was)