A very good, well balanced game, you included plenty of difficulty choices, and a good selection of upgrade types, maybe include more levels to each upgrade type. Accuracy/calibration is perfect, dont know what the other guys are on about, but the look of the scope whilst ADS could be improved, a few more types of zombies would be appreciated. You could also make the surviving troops from one day carry on into the next. The final thing I would ask for is to have a layer of protection that can be upgraded, say start with nothing, then makeshift fence, then barbed wire, then someething else, but these should be expensive.
Thanks for putting the work into this
entertaining for ahort while,
to improve;
more difficulty
levels
upgrades
bosses
maybe a life system (depending on difficulty)
graphics are great, lack of lag is good, addictivity is perfect
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