VERY good
I think I've seen the name Frankenroc around in a few MM submissions' credits. This is definitely one of the best coded games I've come across.
Some suggestions to improve it:
- A skip intro section. There's a bit to get through before the game actually begins. Bit tedious to have to watch through it all each time.
- A pause button. This would be helpful if you have a sudden distraction and are fighting a boss and are on the opposite polarity you could end up dead.
Can't really think of any others besides that the music's a bit loud possibly. Great work. I'll have to check out MM Polarity when I'm finished with this.