Procedural creature sandbox: primitive shapes fused into seamless toon bodies by an SDF blend-shell vertex shader, animated 100% procedurally. One HTML file, no assets. Source on GitHub.
Original demo + technique: GOOBERS (seamless blend shell critters) by u/AntiqueFeedback7447: Reddit post (r/aigamedev, July 2026) and X post. They published the technique writeup and their prompt; their code was never released. Everything here was written from scratch against that public description plus screenshots. Disclosed in the thread as u/MTOMalley.
Visual prior art: RujiK the Comatose, whose pre-AI procedural creatures this style strongly resembles.
Built by Trent Sterling with Claude. v0.2.0
critters is a procedural creature sandbox in one static HTML page. Click or tap the ground to call a critter, drive one with WASD or a gamepad, and watch them walk, hop and fly. There are no assets, no rigs and no animation clips: every creature is a pile of primitive shapes fused into one seamless toon body by a signed-distance blend-shell vertex shader, and every gait is procedural.
It began as a replica of a one-shot demo and turned into a family of tools: the same creatures wander the Campfire island and can be built by hand in the character creator. Three.js, no build step, made by Tront (Trent Sterling).
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