Momoko 120% is a 1986 arcade game by Jaleco released only in Japan. The game was originally intended to be an Urusei Yatsura game, but for an unknown reason the license was not obtained for the arcade version - while the characters were changed, the Urusei Yatsura opening music still loops throughout the game. However, the Nintendo Family Computer port retained the license and was titled Urusei Yatsura: Lum no Wedding Bell.