River City Girls Zero is a localized release of a classic 1990s entry in the Kunio-kun series, originally released only in Japan. It follows Kunio and Riki, framed for a crime, as they team up with Misako and Kyoko to clear their names.

Players brawl through stages of street fights and boss battles in a classic arcade beat-em-up style, with the option to switch between characters. It suits fans of retro brawlers and the River City series.