0rbitalis was released yesterday on Steam! It's a simple little game, where you have to get your rocket to orbit the bodies for as long as possible without crashing into anything. It's basically Kerbal without the building. It's a sweet though, and well worth the £2. Somehow I managed to play it for 2 hours last night... http://store.steampowered.com/app/278440/ go get it! Edit: RPS did a little review of this today: Here and the dev, Alan Zucconi, is answering questions in the comments.