@MartinEnder yeah :) . I got one report about a bug in the alt+enter function already, though (a few excess pixels at the bottom of the window, outside the drawing area)
The web interface kinda sucks, actually. The only way to select which tool to use is to use a hotkey, which is an incredible oversight. Also, is there a "undo" button or is that circular arrow only a reset button?
I stopped after getting the L star for 1.6. I've played this kind of game a few times already and the difficulty curve typically quickly passes the interest curve.