Quite cool! My attempt, 31 lines (although some of them are quite long :) http://jsfiddle.net/8Rqcy/5/ http://jsfiddle.net/8Rqcy/5/ Has score counting, restar

Quite cool! My attempt, 31 lines (although some of them are quite long :) http://jsfiddle.net/8Rqcy/5/ http://jsfiddle.net/8Rqcy/5/ Has score counting, restarts, walls, you can't go back on yourself, and speed increases.