It's been a looonnngg time since i've played KSP, and even then all I could manage to do was make rockets that ended up becoming missiles before reaching outter space, and then there were those times where i'd reach space but lose fuel and go off and have 3 kerbals lost in a very small rocket that's uncontrollable and in space, but now i've been saving up and heard that KSP is on Steam, is it worth getting? also, how to build a working spaceship.