★★★★★
Average rating on the App Store. Apple doesn't publish how many ratings each star has.
This app isn't in any of our charts yet.
- 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.
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