SpaceSim is described as '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' and is an app in the education & reference category. There are five alternatives to SpaceSim for a variety of platforms, including Windows, Steam, itch.io, Mac and Linux apps. The best SpaceSim alternative is Universe Sandbox. It's not free, so if you're looking for a free alternative, you could try OpenSPH or Milky Way. Other great apps like SpaceSim are Space Crash Simulator and Space Simulation Toolkit.
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.
If you're a fan of Solar Smash, Universe Sandbox, Spaceflight Simulator, Solar System Sim; this is your new favorite game!
Real-time planetary collision sandbox powered by SPH physics: smash planets together and watch the destruction and its aftermath!.
Physics sandbox game that uses a graphics card as a supercomputer. Change the laws of physics, design mechanisms, create A-Life worlds and inhabit them with living beings.
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