It took us some time to figure out how the game works but once we did we had a really good time. We did accidentally reset the game at the end with escape it might be good to display a warning when pressing escape. Other than that very good job.
Very charming visuals, I especially loved the blinking animation really nice touch. One thing I'd like to see implemented is a way to call the elevator and tell it which direction to go so you don't have to wait as long and some more content in general would be nice. Still thoroughly enjoyed my playthrough, well done.
Unfortunately some towers stopped doing damage after a while, I'm not sure if this is intended as the game goes on or if certain enemies become immune to some towers after getting through to the end. Nonetheless I really enjoyed my play especially since the SFX are very satisfying.
