PCGame

Space Simulation Toolkit

2D physics sandbox for building and experimenting with particle worlds

Pavel Kudinov · Released Jun 5, 2020 · Early Access

IndieSimulation

AI-generated content disclosed

Reviews
Mostly Positive
77% of 548
Recent reviews
Very Positive
90% of 10 in 30 days
Players
15
daily peak, Nov 7, 2026
Steam Deck
Unsupported
Last update on Steam
2 days ago
Nov 4, 2026
Minimum PC
NVIDIA/AMD with OpenCL 1.2 support, 1+ GB VRAM
2 GB RAM · 1 GB disk
Full requirements

What is Space Simulation Toolkit?

In this 2D physics sandbox, you connect atoms into structures and adjust material properties to simulate gases, liquids, and solids. You can also experiment with Protobiome, a virtual ecosystem with plants, creatures, and evolutionary genetics.

For you if...

  • +you like experimenting with physics in an open-ended sandbox
  • +you enjoy building structures and simulating different materials
  • +you want to tinker with virtual ecosystems and evolution

Not for you if...

  • −you want clearly defined goals instead of sandbox experiments
  • −you prefer systems that are easy to learn

What players say

77% of 548 reviews are positive · 90% of 10 in the last 30 days

Players praise the physics sandbox and its room for experimentation. They frequently report crashes and trouble running it on AMD GPUs; some also find it difficult to learn without a tutorial.

Players over time

▼ -4% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 23 players on Sep 22, 2026.

Show the data
DayPlayers
Nov 7, 202615
Nov 6, 202611
Nov 5, 202610
Nov 4, 20269
Nov 3, 202614
Nov 2, 202616
Nov 1, 202620
Oct 31, 202611
Oct 30, 20267
Oct 29, 20265
Oct 28, 20263
Oct 27, 202613
Oct 26, 202612
Oct 25, 202617
Oct 24, 202611
Oct 23, 202611
Oct 22, 20268
Oct 21, 202611
Oct 20, 20269
Oct 18, 202613
Oct 17, 202613
Oct 16, 202613
Oct 15, 202617
Oct 14, 202616
Oct 13, 202612
Oct 11, 202621
Oct 10, 202619
Oct 9, 202616
Oct 8, 202612
Oct 7, 202615
Oct 6, 202614
Oct 4, 202615
Oct 3, 202618
Oct 2, 202617
Oct 1, 20268
Sep 30, 202619
Sep 29, 202614
Sep 27, 202619
Sep 26, 202619
Sep 25, 202621
Sep 24, 202612
Sep 23, 202610
Sep 23, 202612
Sep 22, 202623

Screenshots and trailer

Space Simulation Toolkit screenshot 1

Space Simulation Toolkit system requirements

Minimum: NVIDIA/AMD with OpenCL 1.2 support, 1+ GB VRAM, 2 GB RAM, 1 GB of disk space.

As published by the developer.

Can my PC run Space Simulation Toolkit?

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

Set up my PC →

Minimum

OS
Windows 7
Processor
Core i3
Graphics
NVIDIA/AMD with OpenCL 1.2 support, 1+ GB VRAM
Memory
2 GB RAM
Storage
1 GB available space
Notes
NOT ALL GPU SUPPORTED! CHECK DEMO FIRST

Recommended

OS
Windows 10
Processor
Core i5
Graphics
NVIDIA GPU with CUDA support, 4+ GB VRAM
Memory
4 GB RAM
Storage
1 GB available space
Notes
NOT ALL GPU SUPPORTED! CHECK DEMO FIRST

Does Space Simulation Toolkit have co-op or multiplayer?

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

Does Space Simulation Toolkit run on Steam Deck?

Unsupported No: Valve rates it Unsupported on Steam Deck.

  • Not supported on SteamOS

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Steam features
Workshop, Family Sharing
Languages
Text only: English.

Does Space Simulation Toolkit use AI-generated content?

Yes. The developers disclose AI-generated content on the game's Steam page:

Using LLM Code Agent for indie development speed up (no "VIBE CODING", it's originally human made project in 2012-2025, author starts using LLM as smart assistant code edit tool since December 2025)

The statement mentions: Code

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 Oct 25, 2026. How to filter AI games on Steam

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