Some say, Only Up is an impossible rage inducing game. I would have to agree. Only Up is a complex platformer game to where you are using objects to go up as high as you possibly can.
f you happen to fall off you have to start all the way over and honestly that would get annoying and frustrating to me. You have to time your jumps just right to make it across.
The world has secrets and mysteries the farther up you go the more you will know about them.
Apparently they took it off of steam because it was too much for the devs and the did not want to keep it running and going.