Really like the smart targeting, where there are no wasted shots from the towers. If a bad guy will be killed in one shot, only one shot goes to him and other shots go to other bad guys. The whole reloading thing left a bitter taste in my mouth, but having this better targeting makes it just fine :)
A small request: when you put little numbers in the bottom corner of the square, if you put more than one number, it automatically rearranges them in ascending order. Could there be an option to turn this feature off? I like to put the numbers in different orders to correspond with values in other boxes (ex. in a multiplying section for 2, I know that the box will be either a 1 or a 2, so in the first box I mark (1,2) in the little corner, and in the other box I mark (2,1), giving me a visual indicator that if one box is 2, the other must be 1). It's not hugely necessary for that specific example, but the values can web out from that, and it gets confusing to keep it all straight. Thanks!