I had a lot of fun playing your game, congrats!
Is there anything on the left side? because the distance was negative when I tried to go there from the start, but maybe there's some kind of easter egg. If there's nothing there, you could try to focus the player to the right (because the start was the tough part for me, I didn't understand the controls and mechanic until I die a few times).
Maybe you could try adding a small tutorial before the game (with even just the player in a sandbox to understand how everything works).
Anyway, it's a great idea and an awesome execution.