У вашего броузера проблема в совместимости с HTML5
Garry's Mod is a physics sandbox. Unlike regular games there aren't any predefined aims or goals. We give you the tools and leave you to play. You spawn objects and weld them together to create your own contraptions - whether that's a car, a rocket, a catapult or something that doesn't have a name yet - that's up to you.
Support the game!:
http://store.steampowered.com/app/4000/
Mods Used:
Map: http://steamcommunity.com/sharedfiles/filedetails/?id=226542828
Hatsune Miku: http://steamcommunity.com/sharedfiles/filedetails/?id=210902773
Sonic Ragdolls: http://steamcommunity.com/sharedfiles/filedetails/?id=105278477