Surprisingly challenging and tense! Seeing the screen quickly fade to red as an enemy approaches is terrifying. I may have relied too much on spamming click the last few levels to take out enemies. Having a cooldown timer on shooting might enhance the difficulty in that respect.
I think I beat the last level in the Windows version, but the game froze on a blue screen after the jingle plays (no rainbow effect). Is that intentional? No problem if it is - just wondering if I may have done something wrong.