I loved the light/shadow. Made it very interesting.
Not going to tell how many times i blew myself up with my own bug 😂
Scrolling between the bugs was very hard for me on a trackpad. As a suggestion: you could bind the bugs to number keys (1, 2, 3) additionaly to switching with scrolling. Don't know unity, but I imagine this wouldn't a lot work :)
Also the music and the sound effects where nicely placed and really helped setting the atmosphere.