Finally someone who thinks about the players who don't play with a QWERTY keyboard. I really like your settings menu! Well done on this part :)
I had a strange bug .. When starting the game it was distorded and could not click on anything. The workaround was to move the window to my second monitor then back to my main.
The debug lines gives a niche cool style to the game, you should have built the graphics on top of that :)