I was just playing this again, and I noticed that upgrading might have an increased fire rate and range on some of the towers (the machine gun), and maybe the range on some other attacks. I wish they told me what upgrading did so I could be sure. If it does increase the rate of fire, it is not (IMO) a large, noticable increase.
I wish there was a tower defense game that would allow you to choose what you were upgrading.
Chris
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Last edited by cjvitek : 07-13-2009 at 08:48 AM.
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