Sandboxels is a free in-browser sandbox game that simulates hundreds of elements as interactive pixels. Players draw materials onto a canvas and watch them burn, melt, freeze, dissolve, and react with each other in real time.
The page presents a drawing canvas alongside element categories such as Land, Liquids, Powders, Solids, Life, Food, and Tools. Buttons open menus for settings, saves, and general info, while additional controls let users pause the simulation and adjust the brush size for placing elements.