This game is unity game, you need to download and use Gameload andinstall Unity3D player
DESCRIPTION: Though its amazing experience to play Counter Strike Source. Here, we came with unity version of Counter Strike which you can play on your browser online. The another benefit of playing it online that all recent updates will come into affect immediately. So what are you waiting for? Listen carefully from where the sound is coming, aim to the head and KILL.
CONTROLS: The default key bindings can be seen below.