This game badly needs some instructions on how to play. I tried several times to get the rocket to launch but never managed it. Even after I found the instructions on the game page I couldn't get anything to happen (it says to use the arrow keys to speed up and slow down but I couldn't see any effect when I tried it). Is the game really working as intended? If so, it's very unclear how to play. The concept seems interesting enough, I assume it's meant to be kind of like a simple version of Kerbal Space Program, but unfortunately I can't seem to experience any of it.