I like your take on the theme and I also like the simple art style! The sound design is very satisfactory in my opinion!
Sadly, I couldn't see all the images. It's kinda frustrating how the game restarts from scratch every time you lose. Also, how can you spend the money you get? Am I missing something? Lastly, it took me a while to realize you can delete multiple pixels at once XD
Anyways, keep up the great work!