Maru-Jan

Maru‑Jan is a desktop and mobile application that lets users play Japanese mahjong over the internet. It provides a graphical interface for arranging tiles, managing hands, and following the rules of the Japanese variant, while handling network communication so that multiple participants can join the same game session.

The software targets players who want to enjoy Japanese mahjong without needing a physical table, including casual gamers and enthusiasts seeking online matches. It runs on macOS as its core platform and is also available for Windows, iOS, Android, Amazon Fire TV, and other devices, allowing participants to connect across different operating systems.

What sets Maru‑Jan apart is its focus on the Japanese mahjong rule set and its stable, cross‑platform implementation. The application supports online matchmaking, friend‑based rooms, and integrates with social networks for sharing game activity, offering a consistent experience for users on desktop and mobile environments.