Wow! that's awesome. I just checked the demo links in the readme. Sprite.js has collision too (haven't checked how it does collision). I tried to find out if t

Wow! that's awesome. I just checked the demo links in the readme. Sprite.js has collision too (haven't checked how it does collision). I tried to find out if three.js supports collision and I came across this issue https://github.com/mrdoob/three.js/issues/issue/49 https://github.com/mrdoob/three.js/issues/issue/49 which says that three.js will focus on rendering part alone. And mrdoob suggests JiglibJS (http://www.jiglibjs.org/ http://www.jiglibjs.org/) on the same thread. The other stuff available right now are: * gameQuery, a jquery plugin http://gamequery.onaluf.org/ http://gamequery.onaluf.org/ * Akihabara, an NES style engine http://www.kesiev.com/akihabara/ http://www.kesiev.com/akihabara/ * xc.js, new one under dev https://github.com/fairfieldt/xcjs https://github.com/fairfieldt/xcjs I however have to mention that ImpactJS looks more complete and solid than the rest. I have a lot of kids coming home asking for small games, so made a few play Biolab (i liked it too) and was waiting eagerly for ImpactJS. P.S: Wasn't it mentioned on the impactjs website that it would be free? Well not that I care about the $99 fee.