I used impact.js in a recent game jam, it makes building tile-based / platformer games a cinch. It lacks a few niceities (motion animation, canvas text), but th

I used impact.js in a recent game jam, it makes building tile-based / platformer games a cinch. It lacks a few niceities (motion animation, canvas text), but those can be hacked in as necessary without too much pain. The documentation is beautiful. Our game: http://ravegame.herokuapp.com/ http://ravegame.herokuapp.com/ Post mortem: http://bcjordan.github.com/games/rave-thru-dawn/ http://bcjordan.github.com/games/rave-thru-dawn/