Red Rover (also known as Bullrush; Forcing the City Gates; Pom, Pom Pullaway; and Octopus Tag) is an outdoor game played primarily by children on playgrounds. "Red rover" was very popular into the 1970s.
A slight variation of the game is known as "Rainbow Rover". In this version, the person calls the people over by a color, and if they are wearing that color they need to run across. In conventional Red Rover, participants are called over one by one.