74%Strong matchSpaceEngine
96%9k96% positive reviews, Overwhelmingly Positive across 9k reviews·Open World · Sci-fi
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Celestarium, an astronomy game where you start as an amateur astronomer. Discover and map planets, sell data to corporates, improve your gear, start your own space agency, manage your own missions, build and fly rockets to discovered bodies. Explore, prosper and expand your presence in space.
Celestarium
SteamA game about exploration and exploitation at every possible level. A futuristic astronomy game set in an alternate reality where you start as an amateur astronomer whose goal is to observe space and look out for planets.

Observe space from your high tech space station using an old telescope of yours. As you explore and discover various celestial objects, sell their data to corporates to earn money. You may use money to acquire better gear, such as more professional telescopes, which accelerate your exploration efforts even more.

Discover anything in the cosmos ranging from the smallest asteroids and dwarf planets to giant stars, supermassive blackholes and far away galaxies.

Start your own space agency and conduct astronomy missions. Hire and lead many astronomers, researchers and engineers to expand your presence in the industry. Manage the assets of your very own agency and play the game of high risks and high gains.

Venture into aerospace business, build rockets from scratch and fly them to the planets you've discovered. Deploy a ton of satellites or probes, attempt landings and even start colonies. The universe of Celestarium has opened it's gates for you to prosper.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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The best games like Celestarium are SpaceEngine, Solar Expanse, Spaceflight Simulator, Star Explorers, and Celestial Command.
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