https://retailer.steampowered.com/app/1852530

Lee’s sister has been kidnapped.
The Shadow Circus is on the town.
This will not be a coincidence.
Let’s go rescue her.

Kung Fu Er San is a 2D retro pixel side-scrolling beat ’em up, impressed by traditional video games and martial arts movies.
You take management of Lee Shao, a gifted Shaolin Kung Fu Master whose sister has been kidnapped.
To rescue her, Lee should combat his approach by side-scrolling ranges filled with traps, thugs, obstacles and surprises, and grasp his punches and kicks to defeat all of the members of the Shadow Circus, a gang of evil circus artists, with loopy distinctive powers and preventing expertise.
The path is arduous, so are the fights.
Do you assume you could have what it takes?

Features:
-Single participant Arcade mode;
-2 gamers Versus mode;
-Action/journey ranges and one-on-one preventing ranges;
-Unlockable characters;
-Unlockable Hard Mode;
-Refined gameplay;
-Simple controls;
-Playable with keyboard or gamepads;
-Steam achievements;
-Many references, gags and surprises.