Could you fix the experience bug that prevents you from leveling past level 73? It looks like you are getting an integer overflow or something somehow. Around level 73 and 1.1 million exp (from 71 to 73, there are no even levels), the experience bar goes Undefined, and the percentage number goes to NaN.
Also the game eventually freezes up in the browser. Not sure what it is. The clicking noise is still there. My activity monitor doesn't show a memory leak I don't think.
a save to the game and a leaderboard would be awesome too.