Unity Web Player is a plug-in for your browser that allows you to play games and watch great 3D content developed with the Unity game engine.
Play incredible 3D games from your browser
You've probably know
High end graphics do have a cost
There is little to criticize about the Unity Web Player. Maybe the worst thing about it is that the high-end graphics mean some games will be pretty heavy on system resources, and you might need quite a good internet connection to load them up quickly. However, the plug-in is highly recommended as you won't have seen games that look this good running on a web page before.
An excellent and unintrusive extension
Installing Unity Web Player lets you play some super cool games in your browser, and it's unintrusive, auto updating quietly in the background, unlike some other, more famous technologies.