Okay, first constructive criticism comment. Good game, although you can to to the top left and leave the map. Some powerups wouldn't go amiss, and possibly some more backgrounds. As well as powerups, upgrading your ship would be a good idea. Maybe bring in some boss levels?
Also, I think you should get rid of all of the unnecessary zeroes after your score. I would prefer it if it only told you how many times you had clicked, and if you click the red button, it reduces the score by the same amount, relatively, although it puts in a decimal, e.g. 2.25.
I actually quite like it. 3/5, although I will increase score if you add High Score API and an Achievement menu. Also, some better graphics woulsn't go amiss.
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