threejs.org/
Three.js allows the creation of GPU-accelerated 3D animations using the JavaScript language as part of a website without relying on proprietary browser plugins.
For that old school look and feel.
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Watch out for these ghastly games
Explore games made with Three.js tagged Retro and Spooky on itch.io · Upload your games made with Three.js to itch.io to have them show up here.
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