These are the worlds of the Nintendoverse:
Palace of Power
Metroid
Castlevania
Megaland
Mt. Icarus
Kongoland
Mirror Zone
Bayouland
Tetris
Shadowlands
Netherrealm
Ghoul Realm
Pencilvania
Icicle Mountain
Planet Popstar
Lylat System
Hyrule
Lorule
Koholint Island
Termina
Labrynna
Twilight Realm
Holodrum
Hytopia
DK Island