With the 50th anniversary of Apollo 11 coming up, here's something that may interest some, RE-ENTRY ORBITAL SIMULATOR, it's a sim of the Mercury, Gemini, Apollo programs, it's in early access currently but is available for purchase from Steam and Windows Store, a lot of the sim is functional now, most all buttons and switches work and there's an Academy to get you started, in future updates you'll be able to fly the LEM, dock/undock, land and liftoff from the moon, check out the Facebook page for recent update info.