Oh yeah, while fiddling around on the title screen I noticed I was always clicking on the zombies as they moved around so I made them squishable. I was thinking about adding a clicker mode where there are no towers, you just bash on the zombies with your mouse. Let me know if that's something people might be interested in.
Awesome game! 5 stars! Just a couple flaws though: Player spawning is too predictable. I just stood in a spawn spot and killed anyone who spawned there or walked up. The ops ended up quitting and left the game full of the same team. The game should also use players names and maybe have some win/loss and loadout screens.
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Thanks. Glad you liked it. Cheers. :)