⚜ SteamCozy

Home / Games / Universe Sandbox Legacy

Universe Sandbox Legacy

Universe Sandbox Legacy

Create and destroy on a scale you’ve never imagined!

Released Apr 29, 2011 Developer Giant Army Platforms Windows SimulationSandboxSpacePhysicsScience
View on Steam ↗ Free (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

80.4%positive2,951 reviews
Recommended · 1 found this helpful

“OGs will know https://www.youtube.com/watch?v=jItnCGRsMjw nuff said”

— a player, Steam review · 2 hrs played
Recommended · 1 found this helpful

“No goals or direction. It started by throwing planets into stars and ended by leaving my PC on for a full real year for one achievement. Yes. A year. Real time. It’s basically a physics sandbox for people who enjoy breaking the universe for fun. If you need structure, you’ll…”

— a player, Steam review · 8,775 hrs played
Not recommended · 6 found this helpful

“I could've sworm I owned this game but convinced myself that I must have refunded it so I added the one ont he store to my wishlist only for me to find it in my library. What a disgusting thing you've done.”

— a player, Steam review · 1 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-11 11:49 UTC · history via SteamCharts.

13playing at last check
2024-hour peak
3,209all-time peak
0 250 500 2013 2015 2017 2019 2021 2023 2025 266 avg · Jul 2013

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

16achievements
5.0%median completion
1.1%rarest: One Year
97.5% of players 96.9% of players 64.7% of players 43.8% of players 33.5% of players 29.2% of players 23.3% of players 6.1% of players 5.0% of players 3.3% of players 2.9% of players 2.2% of players 1.3% of players 1.2% of players 1.1% of players 1.1% of players 97.5% 0% most earned rarest
Almost everyone has
97.5%Startup the Universe — Start Universe Sandbox at least once
96.9%One Minute — Rule over your universe for 60 seconds
64.7%Snowball Earth — Freeze the Earth by moving it farther from the Sun
Rarest badges of honor
1.1%One Year — Rule over your universe for 12 months
1.1%Startup Too Many — Start Universe Sandbox 10^4 = 10000 times
1.2%One Month — Rule over your universe for 30.4 days

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

Freecurrent · sampled 2026-07-26 08:39 UTC
Freelowest since tracking began2026-07-11

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Aug 24, 2015
Universe Sandbox ², the long awaited sequel, is now available on Steam

Universe Sandbox ² is now available now on Steam: http://store.steampowered.com/app/230290/ Universe Sandbox ² is in alpha and very much unfinished, but it already blows away the original version with

Aug 24, 2015
Universe Sandbox ², the long awaited sequel, is now available on Steam

Universe Sandbox ² is now available now on Steam: http://store.steampowered.com/app/230290/ Universe Sandbox ² is in alpha and very much unfinished, but it already blows away the original version with

Aug 28, 2014
Universe Sandbox ², the long awaited sequel, is now available for purchase

Get instant access to the Universe Sandbox ² Alpha on Steam for Windows, Mac, and Linux and pre-order the finished game. Available for purchase at http://universesandbox.com/2 While you buy though our

Aug 28, 2014
Universe Sandbox ², the long awaited sequel, is now available for purchase

Get instant access to the Universe Sandbox ² Alpha on Steam for Windows, Mac, and Linux and pre-order the finished game. Available for purchase at http://universesandbox.com/2 While you buy though our

Games like Universe Sandbox Legacy

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Universe Sandbox Universe Sandbox 96.7% · 22,242 reviews shares God Game, Science, Space Sim, Destruction Kerbal Space Program Kerbal Space Program 95.7% · 95,455 reviews shares Science, Space Sim, Education, Space ΔV: Rings of Saturn ΔV: Rings of Saturn 92.8% · 2,769 reviews shares Science, Space Sim, Space, Sandbox Cell to Singularity - Evolution Never Ends Cell to Singularity - Evolution Never Ends 86.1% · 10,734 reviews shares God Game, Science, Education, Space SpaceEngine SpaceEngine 96.0% · 9,300 reviews shares Science, Space Sim, Education, Space Spaceflight Simulator Spaceflight Simulator 96.7% · 5,500 reviews shares Science, Space Sim, Space, Sandbox Solar 2 Solar 2 90.4% · 1,597 reviews shares God Game, Space Sim, Space, Sandbox SPORE™ Galactic Adventures SPORE™ Galactic Adventures 90.9% · 4,274 reviews shares God Game, Space, Sandbox, Sci Fi

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresCasual, Indie, Simulation
Player tagsSimulation · Sandbox · Space · Physics · Science · Education · Indie · Casual · Singleplayer · God Game · Sci-fi · Free to Play (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · Stats · Family Sharing
LanguagesEnglish
Achievements16
Estimated owners500,000 – 1,000,000 (SteamSpy)
Official sitehttp://universesandbox.com/
Minimum system requirements (PC)

OS *: Windows 7 / Vista / XP Service Pack 3 Processor: 1.5 GHz Processor Memory: 1 GB RAM Hard Disk Space: 250 MB Video Card: DirectX 9 level graphics card