Teenage Mutant Ninja Turtles II: Back from the Sewers, released as Teenage Mutant Hero Turtles II: Back from the Sewers in Europe, and Teenage Mutant Ninja Turtles 2 in Japan, is a 1991 Game Boy game by Konami. It is the sequel to Teenage Mutant Ninja Turtles: Fall of the Foot Clan.