PCGame

Universe Sandbox

Physics-based space sandbox for building and destroying planetary systems

Giant Army · Released Aug 24, 2015 · Early Access

CasualIndieSimulation

Reviews
Overwhelmingly Positive
96% of 30K
Recent reviews
Very Positive
94% of 259 in 30 days
Players
436
daily peak, Nov 7, 2026
Steam Deck
Unsupported
Last update on Steam
3 days ago
Nov 3, 2026
Minimum PC
4 GB Memory†
4 GB RAM · 4 GB disk
Full requirements

What is Universe Sandbox?

A single-player space sandbox where you assemble systems from stars, planets, moons, comets, and black holes, then change their properties and run the simulation. Gravity, collisions, climate, and materials determine outcomes such as shifting seasons, planetary impacts, and supernovas.

For you if...

  • +you enjoy open-ended experiments with gravity and planetary systems
  • +you like creating planets and testing destructive what-if scenarios
  • +you want a relaxed, single-player science sandbox

Not for you if...

  • −you prefer directed objectives over open-ended experimentation
  • −you want competitive or cooperative multiplayer
  • −you specifically want current VR support

What players say

96% of 30,322 reviews are positive · 94% of 259 in the last 30 days

Players praise the freedom to build solar systems, test physical scenarios, destroy planets, and demonstrate astronomy concepts. Common complaints include poor performance, especially on macOS, and a lack of goals that some players find boring after the initial experimentation.

Players over time

▼ -18% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 453 players on Oct 31, 2026.

Show the data
DayPlayers
Nov 7, 2026436
Nov 6, 2026321
Nov 5, 20260
Nov 4, 2026293
Nov 3, 2026348
Nov 2, 2026344
Nov 1, 2026421
Oct 31, 2026453
Oct 30, 2026293
Oct 29, 2026278
Oct 28, 2026267
Oct 27, 2026274
Oct 26, 2026310
Oct 25, 2026400
Oct 24, 2026412
Oct 23, 2026326
Oct 22, 2026306
Oct 21, 2026323
Oct 20, 2026323
Oct 19, 2026343
Oct 18, 2026419
Oct 17, 2026432
Oct 16, 2026325
Oct 15, 2026323
Oct 14, 2026347
Oct 13, 2026342
Oct 12, 2026370
Oct 11, 2026426
Oct 10, 2026406
Oct 9, 2026351
Oct 8, 2026349
Oct 7, 2026342
Oct 6, 2026348
Oct 5, 2026400
Oct 4, 2026436
Oct 3, 2026447
Oct 2, 2026343
Oct 1, 2026332
Sep 30, 2026319
Sep 29, 2026306
Sep 28, 2026352
Sep 27, 2026424
Sep 26, 2026392
Sep 25, 2026367
Sep 24, 2026328
Sep 23, 2026177
Sep 23, 2026335
Sep 22, 2026348
Sep 21, 2026329

Screenshots and trailer

Universe Sandbox screenshot 1

Universe Sandbox system requirements

Minimum: 4 GB Memory†, 4 GB RAM, 4 GB of disk space.

As published by the developer.

Can my PC run Universe Sandbox?

Tell us your graphics card once and every game page will answer this for you.

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Minimum

OS
Windows 10 21H1+ (64-bit, x86)
Processor
1.6 GHz dual-core
Graphics
4 GB Video Memory†, Shader Model 6.0
Memory
4 GB RAM
Storage
4 GB available space
DirectX
Version 12
Notes
† Laptops or other computers that use integrated graphics (rather than separate graphics hardware) require DirectX 12 Feature Level 12_2 or higher and may see issues with Universe Sandbox even if they meet the video memory requirement. Discrete video hardware is recommended.

Recommended

OS
Windows 11
Processor
3.6 GHz quad-core
Graphics
8+ GB Video Memory
Memory
8 GB RAM
DirectX
Version 12

Does Universe Sandbox have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Universe Sandbox run on Steam Deck?

Unsupported No: Valve rates it Unsupported on Steam Deck.

  • Graphics settings cannot be configured to run well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows, macOS
Steam features
Workshop, Cloud saves, Family Sharing
Languages
Text only: English, French, Italian, German, Spanish - Spain, Czech, Danish, Dutch, Finnish, Hungarian, Japanese, Korean, Norwegian, Polish, Portuguese - Portugal, Russian, Swedish, Thai, Turkish, Simplified Chinese, Traditional Chinese, Bulgarian, Greek, Romanian, Ukrainian, Vietnamese, Filipino, Indonesian.

Does Universe Sandbox use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Nov 6, 2026. How to filter AI games on Steam

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