If you click the right link (usually the first or second result on the "top" of the search engine results page), you aren't taken to a commercial website. You are taken to a raw username.github.io subdomain.
Coins are golden, square-shaped items with a red 'C'. Use them to unlock over 100 unique characters, each bringing new visual themes and soundtracks to the game. crossyroad github io top
The official Crossy Road is free but includes video ads and banner ads. Most GitHub.io versions are purely passion projects with no monetization. The Digital Graveyard and the Arcade Revival: Diving