Because these are static web pages (usually built with HTML5, CSS, and JavaScript or WebGL), you do not need to install an app. You click a link, and you are playing Crossy Road in your browser instantly.

The only requirements are a modern browser and JavaScript enabled. No plugins, no app store, no tracking.

Are you a developer who wants to create your own version? The keyword "Crossy Road GitLab io" isn't just for players; it is a search made by coders looking for boilerplate projects.