Uchi No Heya (うちの部屋 — "My Stable") is a free, pixel-art sumo stable management simulation playable in any modern browser. You take the role of an oyakata (stable master) guiding your rikishi through the six annual Grand Tournaments of professional sumo.
Scout new rikishi from high schools, semi-pro leagues, and international sumo circuits. Train them across an 8-week off-season using a two-pool point system. Cook chanko nabe with different recipes to buff your wrestlers before each basho. Compete through 7- or 15-day tournaments depending on division, and climb the banzuke from Jonokuchi all the way to Yokozuna.
Yes, the browser version is free. No ads, no microtransactions, no account required.
Yes. The game is fully responsive and supports both portrait mobile layouts and desktop. Install as a PWA for a full-screen app-like experience.
No. The in-game How To Play guide explains every mechanic and sumo concept used, from kachi-koshi (winning majority) to kimarite (winning techniques) and the banzuke ranking system.
Each in-game year runs six tournaments. Casual players can expect several hours to build a competitive stable; producing a Yokozuna and unlocking the five-star win condition takes significantly longer.
Uchi No Heya is developed by James West, with help from the fans in our discord, the members of /r/sumo, and sumo fans around the world.