It's a nice game, but it feels difficult to control. I think I have to double press space fast to be able to reach the blue block otherwise the jump isn't even close and getting stuck on the wall even for a few milliseconds could mean the end. The game could be more forgiving especially at the beginning where the player still has to learn the controls. Right now it feels like one little mistake already means gameover.
But overall a nice idea, but to difficult for me right now :)