Sandboxels is a browser-based physics sandbox game that runs entirely in HTML5 canvas. The game features an extensive collection of interactive elements including liquids, solids, gases, life forms, and energy sources. Players can manipulate materials like water, lava, acid, and various chemicals while observing realistic physical interactions and chemical reactions.

With over 200 unique elements and materials, Sandboxels offers creative experimentation through mixing, heating, cooling, and combining different substances. The game includes specialized tools for painting, erasing, grouping elements, and applying effects like fire, electricity, and radiation. Players can spawn life forms from bacteria to humans, create complex machines, and trigger explosions or natural disasters.

The latest version, v1.13.3, introduces new features and improvements while maintaining compatibility across modern browsers. The game supports multiple languages and offers various customization options including canvas size, temperature units, and visual themes. Players can save their creations locally or share them through the Steam workshop, with additional features available through the Steam version including mod support and community sharing capabilities.