Dozens of 3D graphics demos, each running live on its creator's own site: all of them playable in your browser with nothing to install. Press a card to play one on its own page, or start the cruise to ride through them one after another.
3D graphics experiments for the browser: rendered scenes, shaders, ray tracers, lighting tests and small 3D games, mostly built on WebGL or WebGPU. Drag to orbit, scroll to zoom and see what a tab can draw.
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WebGL and the newer WebGPU give pages access to the graphics card. Libraries such as Three.js and Babylon.js are built on them.
Some push the GPU hard. A laptop or desktop with up-to-date graphics drivers handles them best; closing other heavy tabs helps.
Usually. Each project page links to its source, shaders included.