Boing Cat Platformer is a free browser auto-run platformer: press Space (or a gamepad button) to time jumps over spikes and gaps while your cat runs forward on its own, across three tile-built levels to a finish flag held by a duck friend. About ~130 KB after Play, no install, no account.
Want an endless high-score chase instead? Try Pixel Spike Run.
Time Space-bar jumps over spikes and gaps in three tile-built levels. From BoingKat by Make Classic Games (MIT, JS13K). About ~130 KB downloads once when you press Play.
Keyboard: Space jumps (the cat auto-runs forward). Gamepad: bottom face button jumps. Best with a keyboard or gamepad.
Boing Cat Platformer
Boing Cat Platformer is a free browser auto-run platformer you can play without an account or install. Press Play to load the ~130 KB canvas engine in a same-origin iframe, then press Space or a gamepad button on the title screen to start.
Key features
- Auto-run movement - your cat runs forward on its own, so you control only jump timing.
- Space on a keyboard or a gamepad bottom face button jumps; no other input exists.
- Three tile-built levels, each ending at a flag held by a duck friend.
- Session-only play - no save data in this build.
How it plays
Time each Space press to hop over spikes and gaps while the cat auto-runs across the three levels. Falling into a gap or touching a spike ends the run immediately. Reach the flag a duck friend holds to clear a level, then clear all three for a final score screen.
Privacy
Nothing leaves this device except the initial page and game files from this site.
For more free browser games, open the games hub.
Frequently Asked Questions
What is Boing Cat Platformer?
An auto-run platformer. Your cat moves forward on its own across three tile-built levels; press Space (or a gamepad button) to time jumps over spikes and gaps and reach the flag held by a duck friend.
How do I control it?
Space jumps; the cat runs forward automatically. A connected gamepad's bottom face button also jumps. Press Space again on Game Over, a level win screen, or the final screen to continue.
What is the goal?
Clear three levels by reaching each level's end flag. Score adds roughly one point per ten pixels traveled; the run ends with a final score after level three.
Is progress saved?
This build is session-only. There is no save data. Closing the tab resets progress and score.
How big is the download?
About ~130 KB of HTML, JavaScript, and two small PNG images after you press Play. The browser caches it for later visits on the same device.
Does it work on a phone?
The page loads on mobile, but jump timing needs a keyboard Space key or a connected gamepad; a touch button is not included in this build. Desktop or laptop is the recommended experience.
Is this open source?
Yes. Adapted from BoingKat by Zerasul and Banus10 (Make Classic Games, js13kGames 2025) under the MIT license, built with the Kontra.js engine and ZzFX audio (both MIT). This site build adds noindex on the iframe, rebrands the title screen to Boing Cat, converts the three level files to plain JavaScript modules, and ships LICENSE plus CREDITS next to the engine.