| App | Key Features | Platforms | | :--- | :--- | :--- | | | Real-time 3D visualization of space; includes a detailed model of the solar system, over 100,000 stars, and more than 10,000 galaxies. | Free and open-source; available on Windows, Mac, Linux, Android , and iOS. | | Space Engine | A real-time 3D space simulator and procedural universe generator; explore the universe in three dimensions, from Earth to the most distant galaxies. | Paid, proprietary software available on Steam for Windows. Note: Check the official site for mobile port availability . | | Space Crash Simulator | A real-time planetary collision sandbox powered by SPH physics; smash planets together and watch the destruction and its aftermath. | Freemium model; available on Android , iOS, Windows, Mac, and Steam. | | Galaxy Engine | Simulates the physics of the universe on a large scale; play with intergalactic interactions, smash planets together, and even create the Big Bang. | Available on Windows, Linux, SteamOS, and Steam. | | Pocket Galaxy | Create your own universe and simulate all the planet orbits in infinite space with realistic physics. Customize your solar system down to the individual star, planet, and moon. | Available on Android . |
A lightweight physics sandbox. It lets you place stars, planets, and moons to observe how gravity affects their orbits. download game universe sandbox 2 for android