The one problem I have with this game is that after I beat the level, sometimes I instinctively hit the spacebar and it restarts. If that could be dealt with this would be awesome.
You have to take away the LOLmarket. What it does is make the green coins useless for lower levels, and the coins will inflate for the higher levels. You keep on raising the prices of green coin things, but people will still have too many. It's a system that can't really last, and it can be exploited too easily.
If the mystery points are going to be so much easier to get through other methods, like the points per minute going up, then the mystery points from green coins should go up too.
So nobody has answered this after so many people have asked (to the best of my knowledge). What is the something special about the last printer upgrade?
also auto fight in the arena shouldn't add a static number to your speed, because then there is no point in buying a faster weapon. It should be a multiplication or something.
You should be able to sell things you buy for the arena to get some pixels back, because sometimes you don't know how good something is, and you waste a few hours worth of gains.