Armor Sandbox: 2D Physics

Armor Sandbox is a 2D physics sandbox and ballistics simulator. Pick something to shoot, pick something to shoot at, and watch what actually happens: armour penetration, ricochets, spalling, fire and explosions, all from real physics.

Nothing here is a canned animation. Every armour plate, every projectile and every fragment is made of particles that carry real material properties: density, strength, toughness, melting point, heat capacity. Deformation, fracture, spalling, heat, fire and detonation all come from those numbers. Swap the steel for glass and it shatters instead of denting, because glass is brittle, not because somebody drew a shatter effect.

NEW: THE SCI-FI EXPANSION

Black holes, antimatter, lasers and the end of the universe, running on the same physics as everything else. 16 new materials, from a black hole generator, antimatter and lasers to strange matter, a force field, hyper-acid, a fusion core, a false vacuum and neutronium. Paint them into any target or projectile. The built-in sci-fi scenes are free to watch. The expansion is an optional one-time in-app purchase and works without the full version.

TANK ARMOUR PENETRATION

Fire an APFSDS dart at a Leopard 2, a HEAT round at a T-72 with reactive armour, or a rifle bullet at a steel plate, and the ballistics decide the result: how deep it goes, whether it ricochets, and what the spall does inside the tank.

WHAT IS IN IT

• 110+ materials: steels, aluminium alloys, tungsten, uranium, ceramics and glass, concrete and stone, wood, rubber, water, fuel, explosives, nuclear materials and working electrical parts
• 70 projectiles: pistol and rifle bullets, APFSDS long rods, shaped charges, HESH, railgun slugs and three detailed missiles
• 90+ targets: armour plates, layered armour, deep blocks, ballistic gelatin, bunkers and circuits
• 36 tank and vehicle cutaways: T-34-85, Tiger I, Panther, Sherman, IS-2, T-55, M103, T-72 with and without reactive armour, M1A2 Abrams, Leopard 2A6, Challenger 2, BMP-1, M113 and more, plus cars, trucks, a bus, a tractor, a fighter jet and attack helicopters, each with its real armour, ammunition, fuel and engine inside
• 60+ ready-made experiments, from a ricochet to a chain of nuclear explosions

MAKE YOUR OWN

Paint projectiles and targets pixel by pixel, choosing the material of every pixel. Mirror, outline, replace, snap to a grid. Save them to your library and share a design with a friend, or with the community Workshop, as a single small file.

WIRE IT UP

Batteries, capacitors, switches, sensors and delay lines. Current goes only where you drew a path.

HEAR IT, RECORD IT

Impacts, explosions, fire and projectiles flying past all sound like the material and the speed. Record your shots as video and share them.

NO ACCOUNT, NO ADS, NO TRACKING

There are no ads and no account. Nothing you build leaves your device unless you export it yourself.

FREE, AND FULL

Watching is free. Every built-in experiment runs in full, explosives, nuclear devices, circuits and the sci-fi scenes included, and so does every vehicle and every material a preset uses.

The full version is for making things: painting with energetic, nuclear and electrical materials, editing the properties of every material, a library without the five-per-kind limit, exporting your designs, and the Extreme and Maximum quality levels. One payment, no subscription. The Sci-Fi Expansion is sold separately, and the Everything bundle includes the full version and the expansion.

Available in English, Portuguese, Russian, Spanish and Chinese.

Armor Sandbox is a physics simulation made for curiosity. Everything happens to particles in a 2D cross-section, and nothing in it is a guide to building anything real.