---
title: "四畳半 (Yojohan: Four and a Half Mats)"
url: "https://aigamehub.app/en/games/yojohan"
source: "https://www.threads.com/@osho_5_star/post/DeQzq6MEb4X"
source_type: "threads"
play_url: "https://yo-jo-han.netlify.app/"
platform: "unknown"
login_required: false
pricing: "free"
origin: "original"
ai_tools: []
game_languages: ["ja"]
author: "おしょう"
author_handle: "osho_5_star"
category: "Puzzle"
categories: ["puzzle", "casual"]
tags: []
added: "2026-10-10T06:22:25.560Z"
updated: "2026-10-10T06:22:25.560Z"
locale: "en"
content_locale: "en"
---

# 四畳半 (Yojohan: Four and a Half Mats)

A Japanese tatami puzzle: lay mats on a grid and make a square room of 3x3 or larger to make a flower bloom.

## Description

Yojohan (四畳半) is a small browser puzzle game published by the Japanese developer おしょう (currently a prototype, v0.7.4). You place tatami mats one by one on a nine-by-nine grid; only a square room of 3x3 or bigger clears and blooms (2x2 does not), and bigger rooms give showier flowers. Mats can be flipped left-right or up-down, one can be held back, and you can undo a move. The mode visible on the page is a marathon to fill fifty mats, and you can switch between Japanese-style background tracks and sound effects, whose sources are credited inside the game page. It is free and needs no login.

## Original post