FLOAT — 3D First-Person Momentum Parkour Browser Game (Three.js + Rapier3D)

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Just released v1.0 of FLOAT on GitHub. A project I’ve been working on for a while exploring first-person momentum traversal and brutalist architecture in the browser.

Currently featuring a custom 60Hz kinematic character controller, momentum conservation, sliding with physical capsule ducking, wall running, and chained wall jumps. No combat or enemies — just movement and atmosphere.

:video_game: Live demo: https://floatparkour.vercel.app
:package: GitHub: GitHub - Henrique-Teruya/3d-platform-game · GitHub

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What’s inside:

  • Physics & Movement: Custom kinematic controller built with @dimforge/rapier3d-compat (WASM) at a fixed 60Hz timestep. Features variable jump height, coyote time (120ms), jump buffering (140ms), Quake/Source-style air strafing, slide slope acceleration, and moving platforms with velocity inheritance.
  • Monumental Brutalism: Colossal concrete structures, colonnades, and suspended monoliths. Built with procedural DataTextures (board-formed concrete and stone tiles) generated in real-time — zero external image downloads.
  • Rendering & Atmosphere: Custom GLSL tri-color atmospheric sky dome with solar disc, PCF soft shadows, and exponential depth fog. Heavily optimized with THREE.InstancedMesh to run under 68 draw calls and ~5,000 triangles in scene.
  • Procedural Soundscape: 100% synthesized in real-time via Web Audio API. Includes a speed-reactive Biquad wind filter, generative harmonic drone chords for each biome, surface-specific foley, and resonant shrine bells.
  • 3 Playable Levels: Includes “The Awakening”, “The Monoliths”, and “The Ascension”, complete with instant shrine respawns (<150ms ethereal fade) and speedrun telemetry.
  • Real-time Tuning GUI: You can append ?debug=1 to the URL to open an in-game lil-gui panel and live-tweak gravity, sprint speeds, jump velocity, and wall friction.
  • Mobile Support: Fully playable on touch devices with virtual joystick controls.

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The project is completely open source. There’s still a lot of ideas I’d love to experiment with in the future (like time-trial ghost replays and more architectural zones).

Hope you have fun exploring the monoliths! Any feedback, critique, or bug reports are very welcome.

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Really cool it feels decent you should add inertia to the player but did you use AI? Just asking because all of my projects are AI because I can’t code but I still love making things.