Those are not high end games. Those are casual games that look like they would run better and would work in a wider array of browsers in flash. Also I am mist

Those are not high end games. Those are casual games that look like they would run better and would work in a wider array of browsers in flash. Also I am mistaken, you can include webgl. I meant NaCl and other kinds of techs that are really just a bridge that lets code written in C++ or with XNA or Unity run in a browser. Also that link doesn't work. I mean, it just doesn't really seem like html 5 is a serious option yet for game development. I'm not saying you can't make a casual kind of game in it. I'm just not sure why you would vs flash for a simple game, or the many much more powerful options which let you deploy to a wider audience(like Unity, Unreal, XNA, even Source). The only reason I can think of is because it is in javascript, but no one should pick an engine based on the programming language it is written in.