Online multiplayer rummy tiles — play with friends in your browser

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RummyCube is a real-time, online multiplayer rummy-tiles game (Rummikub-style) for 2–4 players. Create a room, share the link, and play in the browser on desktop or phone — no install, no account, just a nickname.

Features

• Real-time multiplayer for 2–4 players over WebSocket — moves sync instantly. No accounts: share a room link or code, pick a nickname, play.
• Self-tidying board — drop your tiles and the table reorganizes itself; runs and groups snap into place, so you arrange the game, not the pixels.
• Fits any screen — the whole board stays in view on desktop or phone, no scrolling, with your rack always pinned in reach.
• Mouse and touch — drag-and-drop everywhere, plus tap-to-multiselect to move a whole set at once.
• Polished and juicy — green felt, ivory beveled tiles, a wooden rack; tiles lift, settle and pop, with sound and a mute toggle.
• Quick chat — speech bubbles pop from each player's seat.
• Fair play, built in — the server owns the rules and the turn clock, and a refresh or dropped connection drops you right back into your seat.
• Solo test mode — try the whole thing on your own, no second player needed.

How to play

Each player starts with 14 tiles on a private rack. On your turn, build sets on the shared table:

• a run — three or more consecutive numbers of the same colour (e.g. blue 5 6 7), or
• a group — the same number in different colours (e.g. red 9, black 9, orange 9).

Your first meld must total at least 30 points from your own tiles. After that you may rearrange any tiles already on the table to make new sets. Jokers are wild. The first player to empty their rack wins.

Plays everywhere

Tech stack

Area	Tech
Frontend	React 18 + Vite, @dnd-kit (drag), CSS animations, canvas-confetti, Web Audio
Game / multiplayer	boardgame.io — authoritative game state + WebSocket transport
Hosting	rootless Podman container behind a Cloudflare Tunnel

Local development

Requires Node 22+.

cp .env.example .env   # adjust values if needed
npm install
npm start              # frontend (Vite dev server)
npm run serve          # dev backend server

Run the test suite:

npm test

Self-host

One container runs everything — the boardgame.io server and the built frontend on a single port (9119):

cp .env.example .env.production   # point REACT_APP_SERVER_* at your host
docker build -t rummycube .
docker run -p 9119:9119 rummycube

Then open http://localhost:9119. The live demo at game.shunlyu.com runs this exact image as a rootless Podman container behind a Cloudflare Tunnel.

Solo test mode

Want to see the game without a second browser? In the create-game form, pick "0 · solo test" as the number of players — it starts a real single-player match you can play on your own.

Credits

Bootstrapped from ilov3/rummikub. Thanks to the original author.

Player cat avatars are generated with RoboHash (set4 "Cats" by David Revoy, licensed CC-BY-4.0).

License

Released under the MIT License — see LICENSE.