[gramsey]

Very clever implementation. One thing I would comment though is, it's rather irritating to have the figure constantly moving left or right. It think it would be better if the figure stopped once hands were released from the keyboard.

Not sure if that's the intended functionality, but that's what happens in Chrome for Mac Version 20.0.1132.17 beta.

[mratzloff]

The entire game works properly for me in Safari for Mac. The figure only moves when you press AWSD or the arrow keys.