Steam reviews

Overwhelmingly Positive

96% of 31,102 reviews

Critic scores

Metacritic

Generally favorable

Aggregated from professional reviewers. OpenCritic and others are on the roadmap.

Where to play

SteamBuy or play TwitchWatch live YouTubeGameplay videos

Simulation LiveSmall but alive

UNIVERSE SANDBOX

Universe Sandbox has 381 concurrent players on Steam right now. Its 24 hour peak is 381 and its all-time peak is 381. Data refreshes every 5 minutes from the official Steam Web API.

DEV · Giant Army2015

Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.

Niche but breathing. Best chance to find others at peak hours.
Currently at 100% of the all-time peak of 381 players.
Last updated 2 months ago: Back to the Moon! | Update 36.1.

Playing now

381

24h peak

381

24h change

▲ 0.0%

Quick verdict

Is Universe Sandbox still alive in 2026?

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PREVIOUS 24 HOURS

Chart fills in once we have a few hours of data. Check back soon.

GALLERY & TRAILERS

1 / 19

ACROSS PLATFORMS

STEAMLIVE

Current

381

24h peak

381

All-time

381

TWITCHLIVE · VIEWERS

Watching now

No live streams

Nobody is streaming this game on Twitch right now.

Xbox · PlayStation · Nintendo

No public concurrent-player API exists for these platforms. Other sites guess by scraping achievement timestamps or leaderboards. We won’t make up numbers. If the platforms ever ship a real API, real numbers will show up here.