Recently I try angry bird HD from Chrome web store on my iMac 2009. The gaming itself is fine and also free. But I notice the CPU usage is extremely high, it take 200% of my system. As far as I know, this game is based on HTML5 and taking advantage from WebGL which are supported by OSX10.6. I wonder why small game like this consumes system resource such high? I know OSX performs very poorly when it comes to gaming but I certainly do not expect this bad. How HTML5 version of game performs in your Mac?