Space Crash Simulator vs Sand Trace

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

Drop sand, pour water, ignite fire, and watch real physics come to life. Sand Trace is a pixel-art physics simulator where you paint with 16 different materials and watch them interact in surprising ways. WHAT YOU CAN CREATE - Drop sand, stone, and glass to build structures - Pour water, oil, and acid to watch fluids flow - Ignite wood, oil, and plants to set off massive fires - Spawn lava to melt ice and turn water to stone - Launch missiles and detonate explosives for chain reactions - Electrify water with lightning bolts - Grow forests by placing plants near water - Heat sand into glass for permanent structures 16 MATERIALS, 40+ INTERACTIONS Every material has unique physics. Sand falls and piles up. Water flows and extinguishes fire. Lava melts ice and hardens into stone. Acid corrodes nearly everything. Lightning electrifies water in a spreading chain. Oil floats on water and burns with thick smoke. Plants grow toward water and catch fire easily. Discover every interaction through experimentation. PIXEL-ART WORLD Watch your creations come alive in a crisp, retro-style pixel grid. Every grain of sand, every drop of water, and every spark of fire is simulated individually for a satisfying, tactile experience. PRESET SCENES Jump right in with 5 handcrafted scenes: - Volcano: Watch lava flow and interact with water - Rain: Peaceful rainfall on a landscape - Acid Rain: Destructive downpour that corrodes everything - Forest Fire: A blazing wildfire spreading through trees - Aquarium: A tranquil underwater scene SAVE, RECORD, SHARE - Save and load your creations anytime - Record MP4 videos of your simulations - Take screenshots to share your pixel-art worlds - Works on both iPhone and iPad with responsive layout Download Sand Trace today and start experimenting with physics.