Moonbase Alpha (Astronat Simulator) NASA!
Have you ever wanted to become an astronat and maintain a moonbase? Well now you can!
The game is still on kickstarter , the goal pretty much is to maintain and repair everything thats not working properly. I had a 45 min blast with a friend in a co-op no time limit mission!
Usually there are up to 16 people on one server screaming orders and bringing tools because they wanna break the record which is 6 minutes and something, try it yourself, the game is FREE TO PLAY!
Get it here http://store.steampowered.com/app/39000/Moonbase_Alpha/