This game feels very RNG-heavy. You can actually get trapped by two blocks since you can't effectively run backwards. It hooked me for a bit; I tried to see how fast I could reach the right border, but I had very mixed results since the obstacles could appear so suddenly.
I would suggest two things:
- Give the player some way of anticipating where obstacles spawn (e.g. indicator arrows or widening the screen by a "preview area" the player doesn't need to cross)
- Implement stronger and weaker jumps for more precise control. To me, it felt like I can only jump with max strength, but never do a small hop of sorts.