itch.io

It can be caused by a number of things in a game - frame rate, narrow field of view, lack of focal point, too much bounce (likely not in this case since the movement glides) - plus in the player's environment - closeness to screen, general susceptibility, eyesight problems. It's a tough one to solve. Anyway, as I said, I still enjoyed it. I just had to lie down for a bit. LOL.