Space Crash Simulator0.80 - App Store

Smash worlds together and watch them shatter, merge, and melt, driven by real physics, not pre-made animations. Every planet is made of thousands of interacting particles, so every collision is computed live and no two impacts ever look the same.

Build your own scenario in Setup Mode: place up to 8 bodies, set their size, density, spin and velocity, then let gravity do the rest. Or dive straight into a head-on collision and watch the debris glow, cool, and form a crust.

- True particle physics (SPH), the first of its kind on mobile
- Molten impact zones: heat, lava, and cooling crusts
- Give planets rings or shred a moon into one with tidal forces (Roche limit)
- Protoplanetary disk and colliding-galaxies modes
- Black holes that tear planets apart
- Custom planet textures from your own photos
- Runs on everything: tune particle count, accuracy, and timescale to your device

Version History - NEW: Shape Painter now on mobile too. Draw your own shape (extrude or revolve), then smash it into a planet.
- NEW: Models. Crash spacecraft, moons and statues: Phobos, Saturn V, a Dyson Sphere, the Dagger Station, the Moai and more.
- NEW: Moonlet tracker. Debris that clumps into new moons gets its own trail.
- NO-ADS becomes PREMIUM. It now includes a custom 3D model importer (.glb, .gltf, .zip, .obj, .stl) with colors and glowing lights, plus 20 save slots. 0.80 Sep 30 - NEW: Up to 100,000 particles per planet, twice the detail in every collision.
- NEW: Advanced menu (BODY > Advanced):
- Layer physics: density and viscosity for core, mantle and crust
- Lava and Dust panels, adjustable while a collision runs
- NEW: Collision dust. Hot debris evaporates into clouds of amber dust that spread, cool to violet and fade. Some falls back and turns to rock again. Starts off: BODY > Advanced > Dust to turn it on.
- Added a "Hide/Show UI" button on the top right corner 0.78 Sep 22 - NEW: Up to 100,000 particles per planet, twice the detail in every collision.
- NEW: Advanced menu (BODY > Advanced):
- Layer physics: density and viscosity for core, mantle and crust
- Lava and Dust panels, adjustable while a collision runs
- NEW: Collision dust. Hot debris evaporates into clouds of amber dust that spread, cool to violet and fade. Some falls back and turns to rock again. Starts off: BODY > Advanced > Dust to turn it on. 0.76 Sep 20 - Core view mode added
- Upgraded + fixed CPU core view path
- Setup adjustable height added
- Much better planet surfaces: texture bug fixed, plus new Earth textures
- New gravity solvers: Fast, Balanced, Precise, choose FPS vs. accuracy
- New shapes: ring, hollow sphere, sieve, lattice (cage) 0.74 Sep 3 - Core view mode added
- Setup adjustable height added
- Much better planet surfaces: texture bug fixed, plus new Earth textures
- New gravity solvers: Fast, Balanced, Precise, choose FPS vs. accuracy
- New shapes: ring, hollow sphere, sieve, lattice (cage)
- Performance improvements on lower-end devices 0.73 Sep 3 - Much better planet surfaces: texture bug fixed, plus new Earth textures
- New gravity solvers: Fast, Balanced, Precise, choose FPS vs. accuracy
- New shapes: ring, hollow sphere, sieve, lattice (cage)
- Performance improvements on lower-end devices 0.71 Aug 28 BIG update!

- Big optimization allowing for much higher particle counts
- Reduced initial planet wobble
- New shapes: cube, wall and disk alongside spheres
- Indestructible bodies: shapes keep their shape no matter what
- Improved Compute and Replay, you can now record much longer and
more stable
- Many new planet textures
- Save and load setups, with thumbnails
- Black hole fix + added accretion disk, rings fix
- Shadows: real-time shadows with three quality levels
(Off / Basic / Advanced). Advanced cast and receive shadows per particle.
- GPU rendering: planets now have correct depth and occlusion 0.68 Aug 20 BIG update!

- Improved Compute and Replay, you can now record much longer and more stable
- Many new planet textures
- New shapes: cube, wall and disc alongside spheres
- Indestructible bodies: shapes keep their shape no matter what if you want them to.
- Save and load setups, with thumbnails.
- Black hole fix, rings fix
- Shadows: real-time shadows with three quality levels (Off / Basic / Advanced). Advanced cast and receive shadows per particle.
- GPU rendering: planets now have correct depth and occlusion. 0.67 Aug 17 BIG update!

- Many new planet textures
- New shapes: cube, wall and disc alongside spheres
- Indestructible bodies: shapes keep their shape no matter what if you want them to.
- Save and load setups, with thumbnails.
- Black hole fix, rings fix
- Shadows: real-time shadows with three quality levels (Off / Basic / Advanced). Advanced cast and receive shadows per particle.
- GPU rendering: planets now have correct depth and occlusion. 0.66 Aug 16 BIG update!

- Many new planet textures
- New shapes: cube, wall and disc alongside spheres
- Indestructible bodies: shapes keep their shape no matter what if you want them to.
- Save and load setups, with thumbnails.
- Shadows: real-time shadows with three quality levels (Off / Basic / Advanced). Advanced casts and receives shadows per particle.
- GPU rendering: planets now have correct depth and occlusion. 0.65 Aug 15 • NEW: Added Compute function for smooth replay (including rewind and slow-motion) on weak devices
• NEW: Planetary rings! Give any planet a ring in Setup Mode — tilt it, resize it, watch it orbit, catch the planet's shadow, and rain glowing debris onto the surface. Or shred a moon into a ring with the tidal break-up action.
• New Extras menu in setup (rings & orbit helpers)
• Enter values directly without sliders
• Graphics improvements 0.61 Jul 12 NEW: Planetary rings! Give any planet a ring in Setup Mode: tilt it, resize it, watch it orbit, catch the planet's shadow, and rain glowing debris onto the surface. Or shred a moon into a ring with the tidal break-up action.
- New "Extra" menu in setup (rings & Roche orbits)
- Graphics and game mechanic improvements

Keep the ideas coming! 0.52 Jul 6 - Added real time lighting: planets have night and day sides, and cast shadows on each other
- You can now make planets much bigger by increasing their particle counts.
- Removed 2- and 3- body mode and replaced it with "Planetary Mode". In this mode you can add up to 8 planets in a scenario.
- You can now stand on the planet's surfaces. But beware, it's like standing on pingpong balls :-D 0.39 Jun 24 - Added real time lighting: planets have night and day sides, and cast shadows on each other
- You can now make planets much bigger by increasing their particle counts.
- Removed 2- and 3- body mode and replaced it with "Planetary Mode". In this mode you can add up to 8 planets in a scenario. 0.37 Jun 23 - Exposed some heat system parameters in the start menu
- Rebuilt simulation engine
- Real-time lighting
- New heat system
- Many fixes and optimizations under the hood
- More stable planets, starting in better equilibrium 0.36 Jun 19 - Rebuilt simulation engine
- Real-time lighting
- New heat system
- Many fixes and optimizations under the hood
- More stable planets, starting in equilibrium 0.34 Jun 14 - Rebuilt simulation engine
- Real-time lighting
- New heat system
- Many fixes and optimizations under the hood
- More stable planets, starting in equilibrium 0.33 Jun 13 - Fixed protoplanetary disk textures bug
- Added an option to use your own images as planet textures. Scroll through the planet textures and after Pluto you will now find a "Custom" texture. Click on the blue text and you will be able to select your own image.
- Fixed a touch control bug in setup
- Updated native libraries to support 16 KB memory page size.
- Unity security fix 0.32 10/26/2025 - Added an option to use your own images as planet textures. Scroll through the planet textures and after Pluto you will now find a "Custom" texture. Click on the blue text and you will be able to select your own image.
- Fixed a touch control bug in setup
- Updated native libraries to support 16 KB memory page size.
- Unity security fix 0.31 10/22/2025 - Added an option to use your own images as planet textures. Scroll through the planet textures and after Pluto you will now find a "Custom" texture. Click on the blue text and you will be able to select your own image.
- Fixed a touch control bug in setup 0.30 09/24/2025 - Added an option to use your own images as planet textures. Scroll through the planet textures and after Pluto you will now find a "Custom" texture. Click on the blue text and you will be able to select your own image.
- Fixed a touch control bug in setup 0.29 09/22/2025 - Added an option to use your own images as planet textures. Scroll through the planet textures and after Pluto you will now find a "Custom" texture. Click on the blue text and you will be able to select your own image.
- Fixed a touch control bug in setup 0.28 09/22/2025 - Added Mercury, Saturn, Yellow Star and Blue Star textures
- Replaced the "Texture" selector by a "Material" selector, you can now set all planet materials with it, but also a black hole (single particle with much higher mass) and the new glowing star materials
- Added "Spin" controls to make planets spin at a a velocity and direction of your choice. If you make them spin too hard they'll fly apart however.
- Fixed overlapping UI
- Bug fixes 0.26 06/26/2025 - Added Mercury, Saturn, Yellow Star and Blue Star textures
- Replaced the "Texture" selector by a "Material" selector, you can now set all planet materials with it, but also a black hole (single particle with much higher mass) and the new glowing star materials
- Added "Spin" controls to make planets spin at a a velocity and direction of your choice. If you make them spin too hard they'll fly apart however.
- Bug fixes 0.25 06/18/2025 - Added new galactic collision mode
- Added free camera mode
- Bug fixes 0.23 03/18/2025