Ragdoll Rush

Build a small, playable browser game inspired by "Ragdoll Rush" (Platformer).
Concept: Ragdoll Rush is a chaotic, gravity-driven race where players tumble through obstacle-filled courses, battling physics to be the first to the bottom—solo or with your Twitch chat joining the madness.
Tone/hook (from the game's own page): Welcome to Ragdoll Rush! 
Let gravity do the work as you flop, spin, and tumble your way down a wild obstacle course! There’s no running, no jumping—just pure ragdoll chaos as you bounce off everything in your path on the race to the bottom.

Play solo or connect to your Twitch stream!

First one to the bottom wins… if they can survive the ride.
Tech: use Three.js; keep it to a single page that loads instantly with no login or install.
Controls: keyboard and mouse on desktop, shown on a short how-to-play screen.
Multiplayer: the original is listed as multiplayer. Start with a local or bot opponent, then add online play (e.g. WebSockets) once the core loop is fun.
Core loop: include a visible score, a timer or round clock, an optional local high-score table, progress saved in localStorage.
Steps: 1) get the core mechanic playable with placeholder shapes, 2) add win/lose conditions and restart, 3) polish feel, visuals and sound, 4) add your own twist (setting, character or one new rule).
Make it your own: don't copy the original's name, art, text or code.