Atlanta Riichi Club is hosting its 2025 online tournament!

Open registration for all, regardless of physical location, up to 48 participants. 


Tournament Date: August 23, 2025

Time: 12:00pm ~ 8:00pm ET

Tournament Format:  4-hanchan round robin. Followed by a finals match.

Rules: Default Mahjong Soul Rules with an additional red 5pinzu (a total of four RED 5's, how spicy!)

Registration: Signups are free. The tournament will be held using the mahjong soul tournament platform.

Broadcast: Starts at 11:30am ET @ https://www.twitch.tv/atlantariichi

Sign Up

Grand prize 1st Place

2026 Atlanta Riichi Club Membership + Discord Role of ARC's Reigning Online Champion

Mahjong Soul In-Game Rewards

1st Place: 3 summon Scrolls + 50k Coppers

2nd Place: 1 Sunshine Lucky Bag + 25k Coppers

3rd Place: 1 Sunshine Lucky Bag + 15k Coppers

4th Place: 1 Moonlight Lucky Bag + 10k Coppers

Physical Prizes

Top 4: Mahjong tile plushies
Top 8: MJS Chibi keychain + stickers

Tournament Format

Points Scramble: Players will be assigned seatings in round robin style for 3 hanchans. Top 4 players with the highest plus-minus (+/-) score total move onto semi finals.

Finals Match: Finalists will compete in 1 hanchan to decide on the Final standing for the top 4! Final match seating is determined by points collected in the points scramble.

Match Rules

  • Thinking Time: 5+20s
  • Red Five: 4
  • Open Tanyao: Yes
  • Starting Points: 25000
  • Goal Points: 25000
  • Minimum Points to Win: 25000
  • Uma: +15, +5, -5, -15
  • Oka: 20
  • Game Tips: Disabled
  • Open, Ura, Kan, Kan-Ura Dora: Yes
  • Reveal Dora immediately after open Kan: No
  • Busting: Yes
  • Riichi Bet Points: 1000
  • Repeat Counter Points: 300
  • Noten Penalty: 1000, 1500, 3000
  • Four-Kan Abortive Draw: Yes
  • Four-Wind Discarded Draw: Yes
  • Nine Different Terminal and Honors Draw: Yes
  • Triple Ron Draw: No
  • Head-Bump: No
  • Dealer Repeat on Win: Yes
  • First Place All Last Dealer Win Ends Game: Yes
  • First Place All Last Dealer Tenpai Ends Game: Yes
  • Ippatsu: Yes
  • Extension to South/West: No
  • Multiple Yakuman: Yes
  • Countend Yakuman: Yes
  • Local Yaku: No

Red 5 Akadora Trivia

Red 5's are well known to be a distinguishing feature of Riichi Mahjong. Some sources say akadora were introduced in the form of 2 red 5-pin tiles as a way to promote the 1964 Tokyo Olympics. Between the 70's and now, the usage of red 5's has evolved from an unusual variant a common standard.

Rulesets using 4 Red 5's is less common now but have seen play various games: In the arcade game Mahjong Fight Club (2002), Tenhou (Up until 2007), Yakuza Kiwami (2016). Some mahjong parlors will use more than 3 red 5's as well, along with red 3's, 7's, blue gold, and platinum dora!