You ride an inflatable ring down Sunset Sprint, a 704-meter waterslide strung between tropical islands, racing 12 other swimmers to the pool at the bottom. Steering gently keeps you centered and fast; swing too hard and you fly over the edge, which ends the run unless you turn on practice mode with checkpoints. Two ramps and a shortcut, reached by steering right and jumping, add some risk. There is one course, and you pick a swimmer color and headwear before you start. Works on phones and computers.
How the creator made it
The creator built versions of the waterslide racer to compare coding models. For this version they ran GPT-6 Astra at extra-high effort, asking for a mobile-first game in Three.js and Vite. The project log describes building the scenery from simple shapes and testing whole races, touch controls and checkpoint recovery. It records fixes for ramps that stopped launching after a checkpoint and shortcut rewards that could be earned before finishing the branch.
From their post on X ↗ and 2 pages on GitHub (1 ↗ 2 ↗).
The prompt
Build a mobile-first, original 3D waterslide racing PWA with Three.js and Vite for GitHub Pages. Player plus 12 humanoid NPCs, banked turns, two ramps and a jumpable shortcut, stable track-constrained physics, race elimination and practice checkpoints, personality-driven AI, responsive touch/keyboard controls, adaptive graphics, local-only persistence, path-scoped offline caching, menu/countdown/results/settings.This is part of the prompt; the creator didn't share all of it.
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The game and its prompt belong to @KJLKurt. Preview recorded by us. Made this game? Here's how we list it.