Fun game but I couldn't finish it. I went as far as a huge flat platform with a block next to it where I couldn't jump across and the last checkpoint was too far from it. The "tutorial plane" with the controls on it wasn't on screen when you start the game. It requires movement and jumping to get to it which defeats its purpose. There were some other things but other commenters have pointed them out.
Last but certainly not least - the cube on the thumbnail has a mouth whereas the one in game doesn't. I feel click baited :P