Full game metadata
| Field | Value |
|---|---|
| Steam app type | game |
| Steam App ID | 4055380 |
| Live current players | 21 |
| SteamPulse tracked peak | 69 |
| Live count (today's peak floor) | 21 |
| Price | $14.99 |
| Free to play | No |
| Discount | 0% |
| Original price USD | $14.99 |
| Current price USD | $14.99 |
| Release date | Dec 15, 2025 |
| Developer | Pavel Ševeček |
| Publisher | Pavel Ševeček |
| Owners estimated | Not available |
| SteamSpy owner estimate minimum | 0 |
| SteamSpy owner estimate maximum | 20,000 |
| Review type | Very Positive |
| Positive review percent | 95% |
| Positive reviews | 214 |
| Negative reviews | 11 |
| Total reviews | 225 |
| Steam recommendations | 267 |
| Achievements | Not available |
| Average playtime forever | Not available |
| Windows support | Yes |
| macOS support | No |
| Linux support | Yes |
| Parent game | Not available |
| Store URL | https://store.steampowered.com/app/4055380/ |
Short description
Simulation & rendering software that uses Smoothed Particle Hydrodynamics (SPH) to simulate collisions of celestial bodies, accretion disks around black holes, or formation of galaxies in the early universe.
About this game
SpaceSim is a particle-based simulation and rendering software, primarily focused on astrophysical applications. Important! This is a non-realtime simulator. Although low-resolution simulations are fast enough to be real-time, simulations with millions of particles can take several hours to finish. This is not a game . It does not contain any game mechanics, progression, sandbox elements, etc. Please do not expect any gaming experience. The goal of the project is to "de-mystify" scientific simulations and make them accessible to the general public. SpaceSim uses the same approach (albeit simplified and at lower resolution) as the research simulations typically run on supercomputers, but it can run on your desktop PC or laptop, comes with an intuitive user interface, and requires no extensive knowledge of mathematics, physics, or programming. You can recreate some of the well-known simulations from the scientific literature, such as the Moon-forming impact, the formation of the ring system of Saturn, or the DART kinetic impactor. Or you can simply explore various initial conditions, both grounded and realistic, but also hypothetical "what-if" scenarios, such as the collision of two planets made of matter and anti-matter. Fluid dynamics and gravitation Each deformable object in the simulation is discretized into particles that interact with each other through collisions (by solving the Navier-Stokes equations) and gravitational attraction. Objects can also be rigid (non-deformable) - they retain their shape, which simplifies collisions between objects and optimizes simulation speed. The particle-based solver is useful for simulating a number of astrophysical events, such as the formation of planets from protoplanetary disks or the mutual interaction of galaxies. Object customization The application has a number of object types - planets, stars, asteroids, disks, clouds, galaxies, and more. Each object has adjustable parameters that allow you to change its geometry, materials, appearance, and simulation behavior. The surface textures of planets and asteroids can be further tailored using procedural generation or by uploading custom images. Or, if you need…
Supported languages
English