NASA's MMOG Astronaut: Moon, Mars and Beyond is currently being developed, but a demo called Moonbase Alpha will be available on Steam sometime before or after January 2010. Moonbase Alpha explores the NASA Constellation program for the year 2020, while the full MMOG, Astronaut: Moon, Mars and Beyond is set further in the future around the year 2035. Considered a STEM-learning game, this MMOG is sponsored by NASA Technologies and a short video of the gameplay can be viewed here:
Astronaut: Moon Mars and Beyond is the upcoming official NASA MMO. This demo called "Moonbase Alpha," explores NASA Constellation program design details planned by NASA for 2020. Timelines in Astronaut: Moon, Mars and Beyond are set farther in the exciting future (2035+), but the ability to explore our own near-future moon missions are in scope in the much-anticipated STEM-learning game sponsored by NASA Learning Technologies. This mini-demo game is entitled "Moonbase Alpha."