If the site itself is blocked, a VPN can help you gain access.
: Black Ops 2 is a massive 15GB+ game requiring specific DirectX 11 hardware to run. Web browsers are not designed to handle the full graphical engine of a 2012 console-grade shooter without external software. call of duty black ops 2 unblocked games 66
If you are looking for the full experience with Zombies and competitive multiplayer, browser sites are not the solution. Instead, players use these methods: If the site itself is blocked, a VPN