Hey, that's instructive!
Thanks for that complete feedback. You're right about "you don't have to read to learn the mechanics"!
Seeing your gameplay (thanks for it btw!), I'm asking myself if you got that the heartbeat actually gives the instruction of where to go (left/right) from your position, it helps a lot!
Anyway all what you're saying is damn right and I'm taking big notes for the next game I'll made!
Thanks for playing :)