Harena

A cellular falling-sand sandbox. 165 materials on one grid of up to 2.36 million cells, with heat, reactions, circuits, optics and magnetism on the same solver.

• 165 materials: sand, water, lava, acid, metals, gases, plants, creatures. 32 of them are made only by reaction
• Grids up to 2048 x 1152, 2.36 million cells, every cell simulated
• Heat: every material has a melting, boiling and ignition point, and latent heat
• Reactions have a temperature window, and each one you find is logged in the codex
• Four views: material, thermal, velocity and air flow
• Electricity: wire, battery, diode, lamp, and heat, cold and wind sensors
• Optics and magnetism: laser, mirror, prism, two magnets, pump
• Wind and pressure: smoke, spores and ash are carried by the air
• Creatures and vehicles, including a character you steer yourself
• Six starting worlds, ten save slots, undo, pinch to zoom and pan. Landscape only, playable offline