Spaceflight Simulator Build it, launch it, watch it wobble

You assemble your launch vehicle from fuel tanks, engines, fairings, capsules, separators, landing legs and parachutes, every part modeled on its real-world counterpart with its own mass and aerodynamics. Engines model thrust and fuel consumption, so what you can carry safely depends on what you bolt together. Build multistage vehicles, decide when they separate and when the second burn fires, and chase the trajectory that actually gets you there.

Your first rocket can fly within minutes. Landing it in one piece might be another story, and that gap is where the game lives. There are skins to personalize your rocket too, which matters once you spend two hours making one beautiful.

Earth is your starting point. From there: the Moon, Mercury, Venus with its dense, hot atmosphere, Mars and its two lopsided moons, Ceres, Jupiter with five moons of its own, Saturn's crowd of eight, the ice giants, and Pluto and its companions at the edge of the map. Every destination models its own gravity and atmospheric conditions, so each one is a fresh landing problem.

The scales are smaller than real life, which keeps trips manageable without losing the sense of distance. Getting to orbit is a challenge in itself; getting to Pluto and back is the kind of thing you remember.

Your world is persistent, so your work accumulates across missions. Launch satellites, send up multiple rockets, build rovers for exploring surfaces and assemble space stations in orbit. Docking two station parts together for the first time can take a dozen failed attempts, and it is worth every one.

Build your presence in space over multiple missions: refueling stops, outposts, a station above a planet you have already conquered. The only stated limit is your imagination, and the game does nothing to argue with that.