Aotenjo: Infinite Hands

Category: Side games · Single-player mahjong roguelike deckbuilder (Windows/Mac on Steam); build scoring hands from 100+ patterns and 144 artifacts
Also called: Aotenjo; Aotenjo Infinite Hands; Aotenjo: Infinite Hands (Steam Early Access); mahjong roguelike by XO Cat
Last checked: 2026-10-09

What it is

Aotenjo: Infinite Hands is a single-player roguelike deckbuilder built on mahjong hands, sold on Steam for Windows and Mac. Developer XO Cat and publisher XD describe it as the place “where the ancient game of Mahjong meets the strategic depth of deckbuilding.” Players build hands from over 100 Patterns (yaku), collect 144 Artifacts, and use special tiles and gadgets to beat escalating bosses. Runs are seeded, so each one differs. Its scoring ideas come from over 40 regional mahjong styles, including Riichi, MCR and Cantonese (dora, flower tiles, two-suit challenges). It has been in Early Access since January 19, 2025 and lists at $9.99. It is a solo strategy game that uses mahjong hands, not four-player table mahjong and not tile-matching solitaire.

Who it’s for

Mahjong players who already know what a pung, chow or yaku is and want a solo strategy game between table nights. It also fits fans of score-chasing roguelikes who want to learn mahjong hand patterns along the way. Existing Side games listings on disk are almost all mahjong solitaire (tile matching): Arkadium, Brainium, MobilityWare, Microsoft, 247 Mahjong, Mahjong City, Foony, Leon’s Mahjong, GNOME Mahjongg, Shanghai Legend, etc. None uses real mahjong hand-building.

Why it’s listed

The plaza needs a side game that differs in kind from recent picks: Thursday’s Leon’s Mahjong (paid pixel-art solitaire app), Wednesday’s GNOME Mahjongg (Linux solitaire), Tuesday’s Foony and Monday’s Mahjong.now (browser solitaire portals). Aotenjo is the plaza’s first mahjong-hand roguelike, a single-player game where scoring comes from real mahjong patterns rather than tile matching.

• Official Steam store page (https://store.steampowered.com/app/3066570/Aotenjo_Infinite_Hands/) returned 200 on 2026-10-09:
  • Developer XO Cat; publisher XD. Release date Jan 19, 2025. Price $9.99 (U.S.).
  • Marked “Early Access Game”: “Games in Early Access are not complete and may or may not change further.”
  • “Dive into Aotenjo, where the ancient game of Mahjong meets the strategic depth of deckbuilding. Use unique Artifacts, master intricate Patterns (Yakus), and harness Special Tiles to overcome malicious threats and emerge victorious!”
  • “With over 100 Patterns and 144 unique Artifacts, every hand you play can unleash unbelievable combos.” Levels are seeded to generate new Artifacts, gadgets and augments each run.
  • “Inspired by over 40 different regional Mahjong styles … Whether you’re a beginner or a seasoned player of Richii, MCR, or Cantonese Mahjong, you’ll find something to enjoy. From Two-Suit Only challenges to Dora and Flower Tiles, we have it all!”
  • Platforms: Windows and macOS (Steam app data). Languages: English, Simplified Chinese, Japanese, Traditional Chinese. Features: Single-player, Steam Achievements, Steam Cloud, Family Sharing.
  • Minimum PC specs: Windows 7/10/11, 2.0 GHz processor, 2 GB RAM, 400 MB storage.
  • User reviews: “Very Positive” (87% of 964 reviews) shown on the page on the check date.
• Steam news / announcements (https://store.steampowered.com/news/app/3066570) returned 200:
  • Patch 0.7.0.1 (Sep 27, 2026) fixed gadget, UI and memory issues in version 0.7.0.0.
  • September 24, 2026 update: a new Mechanical Material Set (7 parts; each Mechanical Tile holds up to 3) with 23 Mechanical Artifacts, a revamped boss-clear screen, and a 20% Steam Autumn Sale announced for Sep 26–Oct 9.
  • Earlier 2026 updates: improved controller support (Aug 4) and a Pattern Pack Evolution system (Jul 28).
• Early Access launch post (https://store.steampowered.com/news/app/3066570/view/748260861310664788) returned 200.

Not stated on the store page: a full-release (1.0) date, a mobile or console version, or an official website (Steam lists none, and aotenjo.com did not respond to curl). The sale was announced at 20% off through Oct 9, but the store showed the regular $9.99 with no discount when checked on 2026-10-09. Review counts change daily; the page showed 964 reviews while the reviews endpoint counted more across languages. As an Early Access game, content and balance can change between updates.

Official URL

Official store page (buy / download): https://store.steampowered.com/app/3066570/Aotenjo_Infinite_Hands/

Developer news and patch notes: https://store.steampowered.com/news/app/3066570

Early Access launch announcement: https://store.steampowered.com/news/app/3066570/view/748260861310664788

Location

PC/Mac download via Steam (Windows and macOS). No physical venue, browser version or mobile version listed.

Notes

• Single-player mahjong roguelike that scores real hands (yaku, pungs, dora, flowers). It is neither tile-matching solitaire nor four-player table mahjong.
• Early Access since January 2025, with regular 2026 updates (0.7.x in September 2026).
• Steam is the only official storefront listed; no official website was found.
• Not affiliated with Mahjong Plaza.

FAQ

Q: What kind of game is Aotenjo: Infinite Hands?
A: A single-player roguelike deckbuilder where you score by forming mahjong hands. The developer cites over 100 Patterns (yaku), 144 Artifacts and seeded runs, with rules drawn from over 40 regional styles.

Q: How much does it cost, and what does it run on?
A: On 2026-10-09 Steam listed $9.99 (U.S.) for Windows and macOS. No Linux, mobile or browser version is listed.

Q: Do I need to know mahjong to play?
A: The developer says both beginners and seasoned Riichi, MCR or Cantonese players will find something to enjoy. Knowing pungs, chows and common yaku helps.

Q: Is the game finished?
A: Not yet. It has been in Early Access since January 19, 2025. The latest patch on the check date was 0.7.0.1 (September 27, 2026).