fun game

my only problem with it is the steep difficulty curve

Very nice idea and mechanics, but the graphics are quite poor. The biggest pain was the inscriptions which after the start there is too much on the screen and near the upgrades they are too small.

Very fun; it'd be neat if you had it generate amounts of enemies for waves after the last premade one

Enjoyable :) Kinda funny you don't have a win screen. I like frantically buying upgrades as the bugs swarm me.