This game is definitely very, very promising!
The art is definitely good, and the overheating mechanic is certainly a smart and unique one!
I even like the ability to swap palletes on the fly. I like that kind of stuff! (I even put it in my own game lol)
Only thing lacking is the sound department. There's definitely good SFX, it's merely just now the fact that the "music" is literally the pulse (and noise, I think) channels playing like one note and then looping till the end of time