Captain Rainbow[a] is an action-adventure video game developed by Skip Ltd. and published by Nintendo for the Wii.

The game puts players in the role of Nick, an ordinary guy, whose alter ego "Captain Rainbow" was once a popular TV superhero.

Captain Rainbow is an action-adventure game that involves making friends with the other island residents (who are all lesser-known Nintendo characters), collecting "Kirarin" crystals, and granting their wishes.

The game's storyline follows Nick, who is able to transform into "Captain Rainbow", a yo-yo-wielding, tokusatsu-styled superhero that stars in his own TV show, but is no longer popular.

Nick meets a vast array of past, minor Nintendo characters with their own dreams and wishes on his journey.