Independent project
Built for one shared table.
The idea
The project focuses on fast room codes, an authoritative realtime game server, ruthless stacking rules, reconnect recovery, host controls, and a table that remains playable across desktop and mobile landscape screens. Bots fill empty seats without creating a separate single-player mode.
One rules engine, two clients
Browser and Android players connect to the same Socket.IO server and share the same validated protocol. The server—not the client—decides whether a move is legal. This keeps cross-play consistent and lets interface improvements remain separate from game logic.
Maintainer and source
The project is maintained through the supplied GitHub profile. Use the repository to inspect the implementation or report a reproducible problem.
Mercyless is an independent fan-made project and is not affiliated with, sponsored by, licensed by, or endorsed by Mattel. UNO and related marks belong to their respective owners.