Concept is good. It's unclear at first which direction the bugs come from. It would have been nice to have a set path they travel on like a conventional tower defense. Maybe different bugs could require you to move or reconfigure towers since you have a limited number of them.
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Thanks for playing my game! I think you’re right. Maybe I’ll add indicators for their direction & perhaps bugs that move to different lanes someday. I also think that maybe I should make the enemies more difficult to kill as the waves increase because at the moment they’re killable with only a few towers so there’s not much need to move the towers to prioritize a lane.