Some GitHub repositories host unique fan-made levels or "scratch" versions that offer a slightly different aesthetic or mechanic than the original game. The Evolution: From Flash to HTML5
You don’t need to download an .exe file or visit an app store. It runs entirely within Chrome, Firefox, or Safari. geometry dash githubio
Geometry Dash GitHub.io: The Ultimate Guide to Browser-Based Splashing and Crashing Some GitHub repositories host unique fan-made levels or