There have been a number of space station sim games over the years, but in the past most have been firmly of the tycoon game style--that is, primarily about building modules and expanding your station, with some notional flow of dollars increasing if you do it well. SpaceStationSim takes a somewhat different approach; it's more of a hybrid of a life sim (the granddaddy there being The Sims) and a tycoon game. You create an astronaut, and the gameplay involves both building out your station and satisfying the needs of your crew. Which includes, naturally, things like making sure they have enough to eat and time for potty breaks--and also enough to breathe. Life on the final frontier isn't always easy.