When schools block games, they usually use web filters that flag keywords like "game," "Steam," or specific URLs. An "unblocked" version is simply a copy of the game hosted on a different website that hasn’t been flagged yet—often a Google Site, a personal blog, or a mirror site.
Schools often block access to games like FNAF 2 on their networks for several reasons: fnaf 2 unblocked at school
There are specific websites dedicated to hosting flash and HTML5 games specifically for school environments. Common names you might encounter (though availability varies by district) include: When schools block games, they usually use web