Like the concept but the visuals make it very, very rough to see proper and actually comprehend what you're seeing/react to it. Think it could have gained from being either a bit less zoomed out (so everything's bigger) or totally more zoomed out (so that everything's just a pixel and you use only color to differentiate.
I understand that part of your challenge was to design for some kind of handhelp on top of just lowrez but man, on keyboard, that didn't play well/smooth, at least for me, mainly because of the chosen key positions.
Other than that, pretty good (and pretty hard).
Kudos.