Mahjong Soul

Category: Home games · Japanese Riichi online
Also called: MajSoul; 雀魂; MahjongSoul (Yostar EN)
Last checked: 2026-09-04

What it is

Mahjong Soul is a first-party online 4-player Japanese Riichi (Japanese mahjong) client from Cat Food Studio / Yostar. You sit ranked or friend-room tables against other players (or practice modes), with tutorials and cosmetic gacha — it is not American Mah Jongg, not Chinese Official / MCR as the primary product, and not solitaire tile-matching.

Who it’s for

Players who want live or ranked Riichi at home on browser, Steam, iOS, or Android, labeled clearly as Japanese mahjong rather than an NMJL-card American table.

Why it’s listed

Plaza needs a citeable Home-games slot for real 4-player Riichi that is not Mahjong Time (skipped) and is not a solitaire side game.

• Official hub (https://mahjongsoul.yo-star.com/) and browser client (https://mahjongsoul.game.yo-star.com/) loaded on 2026-09-04. Browser build stamped in page assets as en-WebGL-release-4.0.10; companyName CatfoodStudio, productName MahjongSoul.
• Steam (https://store.steampowered.com/app/2739990/Mahjong_Soul/): publisher YOSTAR HONG KONG LIMITED; listed Free To Play; About copy: “adopted the classic Japanese Mahjong gameplay” / “Classic Japanese Mahjong (also known as Riichi Mahjong)”; Friend Room for pals plus global matches; beginner tutorials; requires a Yostar Account (Steam linking supported). Steam release date printed: Jul 23, 2024.
• Google Play (https://play.google.com/store/apps/details?id=com.YoStarEN.MahjongSoul): developer YOSTAR (HONG KONG) LIMITED; “blend of cute, appealing anime characters with Japanese Mahjong”; friends system; in-app purchases; hub link to mahjongsoul.yo-star.com. Play page printed Updated on Jul 28, 2026. Developer address on that listing: Rm 06 13A/F Harbour City World Finance Ctr S Twr, 17 Canton Rd, Tsim Sha Tsui, Kowloon, Hong Kong.
• App Store (https://apps.apple.com/us/app/mahjong-soul/id1464872167): Free · In‑App Purchases; seller YOSTAR LIMITED; same “classical Japanese Mahjong” framing; official homepage link matches the Yostar hub. What’s New on the store referenced a collab with Riichi-named decorations and a Holy Mahjong War event.

No NMJL card, Charleston, or American scoring is described on those official store pages. Cosmetic / gacha purchases are optional; table play is framed as free-to-play.

Official URL

Hub: https://mahjongsoul.yo-star.com/

Play (browser): https://mahjongsoul.game.yo-star.com/

Steam: https://store.steampowered.com/app/2739990/Mahjong_Soul/

Google Play: https://play.google.com/store/apps/details?id=com.YoStarEN.MahjongSoul

App Store: https://apps.apple.com/us/app/mahjong-soul/id1464872167

Location

Play is online (browser, Steam, iOS, Android). Publisher: YOSTAR (HONG KONG) LIMITED / YOSTAR LIMITED. Google Play developer address: Harbour City World Finance Centre, 17 Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong.

Notes

• Japanese Riichi / Japanese mahjong only as the listed rule family. Do not blur this into American Mah Jongg or Chinese Competition Rules.
• 4-player online table, not solitaire tile-matching.
• Hub, Steam, Play, and App Store pages loaded on 2026-09-04.
• Not affiliated with Mahjong Plaza.

FAQ

Q: Is Mahjong Soul American Mah Jongg or solitaire?
A: No. Steam and the mobile stores call it classic Japanese / Riichi mahjong with online matches and friend rooms. It is not an NMJL-card American product and not a tile-matching puzzle.

Q: Where can I play?
A: Official hub points to browser play at mahjongsoul.game.yo-star.com, plus Steam, Google Play, and the App Store. A Yostar account is required (Steam page notes account linking).

Q: Is it free?
A: Steam lists Free To Play; the App Store lists Free with In-App Purchases; Google Play lists in-app purchases. Cosmetics/gacha are paid options — those pages do not print a required subscription price for ranked Riichi on the check date.