Webcam Motion Games
Play With Body Movement, No Extra Hardware

Browse and play every SwayJoy motion game free in your browser: your body is the controller. No downloads, no apps, no extra hardware - just wave, tilt, clap, pinch or swipe to play.

From a High School Classroom to the Browser

By Holy Yang, founder of SwayJoy

SwayJoy began in the computer room of a small-town high school, where teacher Holy Yang spent nearly thirty years teaching students to use computers and quietly wishing they could build with them. At the end of 2024 a MediaPipe demo showed him a hand being tracked in an ordinary browser: open a page, wave at the camera, and twenty-one landmarks light up in real time. No installer, no console, no sensor bar. It was the bridge he had been looking for, between the math he wanted to teach and the games his students wanted to play.

Over one winter break he wrote his first webcam game, an Air Piano played by moving your hand. When his students opened the same page on their own phones, the room erupted. From then on a student would describe an idea in plain words, Claude would help turn it into code, and the student would pour the real effort into the part that matters: the rules, the flow, the design. By 2025 those classroom projects, fruit-slicing gesture games, a posture corrector, even an air guzheng, had filled the hard drive and still had no audience.