Lee's sister has been kidnapped.The Shadow Circus is in town.This is not a coincidence.Let's go rescue her.Kung Fu Er San is a 2D retro pixel side-scrolling beat 'em up, inspired by classic games and martial arts films.You take control of Lee Shao, a talented Shaolin Kung Fu Master whose sister has been kidnapped.To rescue her, Lee must fight his way through side-scrolling levels full of traps, thugs, obstacles and surprises, and master his punches and kicks to defeat all the members of the Shadow Circus, a gang of evil circus artists, with crazy unique powers and fighting skills.The path is arduous, so are the fights.Do you think you have what it takes?Features:Single player Arcade mode;2 players Versus mode;Action/adventure levels and one-on-one fighting levels;Unlockable characters;Unlockable Hard Mode;Refined gameplay;Simple controls;Playable with keyboard or gamepads;Steam achievements;Many references, gags and surprises.