From site: Welcome to the International Space Station, Astronaut. In Station Spacewalk Game you’ll experience the thrill of conducting NASA repair work on the International Space Station. After negotiating your way through the airlock, you, the astronaut, will be tasked with four jobs critical to help power up the space station so it can continue to operate at full capacity. But you have to move quickly and carefully, with a limited quantity of oxygen you must complete your EVAs and get back into the airlock before your air supply runs out.
This game features simulations of actual extravehicular activities (EVAs) conducted by NASA astronauts on missions to provide power to the space station. The graphics used in this game are based on real NASA missions and incorporate 3D graphics used by the Agency.