Ganbare Goemon: Tengu-tō no Gyakushū! is a role-playing game developed by TOSE and published by Konami for the Game Boy Color. It is the sixteenth main entry in the Goemon series.
Tengu-tō no Gyakushū! plays as a traditional Japanese RPG in which you control a party of up to 3 characters from Goemon's gang and explore the game world getting quests and advancing the main plot. Combat switches you to a turn-based side-view in which your selected "lead" character performs the main attacks and actions while your other characters lend their special abilities in supporting roles.
The protagonist in the game is a boy named Hajime, who somehow gets transported into a Goemon game and teams with Goemon in order to save Japan from an evil force.