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'Kitten Space Agency' is the spiritual successor to 'Kerbal Space Program', and they have an ex-SpaceX engineer on the team (interview)

DayZ and Kerbal Space Program's creators have joined forces with an ex-SpaceX engineer to create the ultimate spaceflight ...

Super-realistic space sim Reentry is finally finished after ten years, and it'll put your flight skills to the ultimate test

If you think you've got what it takes to be an astronaut, Reentry 1.0 will test your space flight abilities in a deep, real-life simulation.