A friend of mime has been working on this: A sim "lite" of NASA's "Manned Manouvering Unit". Still a few weeks away, but looking very promising. This is his description: "The "game/simulator" consists of 20 missions where the astronaut must try to rendezvous with different satellites or crafts and align to several repair positions for enough time to complete the tasks. This becomes more difficult as some of the targets are less stable in their movement. There are also three resources to manage while completing the mission as the astronaut can run out of Oxygen, Fuel and Electricity." Some shots: I just love the detail on those models. He is not cutting any corners! : More info and frequent updates on his blog: http://www.astronautgame.blogspot.co.uk/ Can't wait!