Another extremely popular entry point to space exploration, there's more sci-fi involved in "Space Engineers" -- it's set around 60 years into the future -- but it does get us thinking about how to survive in an environment that does not naturally support the sort of life we are built for. Here, creativity and exploration depend upon not just engineering (as the title might suggest) but also maintenance, construction, and resource gathering. Hugely expanded from its original focus, there's not just space stations and asteroid mining but now also surface colonisation.

Available on Xbox One, PC

Another rocket science option, this time without the cute and cuddly Kerbals, but focusing on custom rocket builds, engine designs, procedural part design, orbital flight, and a nifty fast-forward option that takes the wait out of interplanetary travel. Recent updates include a visual programming tool for task automation, custom planetary systems, plus surface exploration -- though distinct from "Space Engineers," the emphasis here remains on currently available technologies. The original "SimpleRockets," which is in 2D rather than 3D, is also available on Android, iOS, Mac and PC as a simpler take on the "Kerbal" experience.

Available on iOS, Android, PC, Mac

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