
217
playing on Steam now·
217
24-hour peak
All-time peak 886 in Jul 2026·30 days −9%
Steam players tag Riichi City - Japanese Mahjong as Sexual Content, strongly enough that it is among the game's defining tags rather than an incidental one. Players tag this for sexual content, though Steam does not rate it Adult Only — on Steam this is usually the censored release. Expect sexual themes rather than explicit imagery.
Coilr does not show screenshots for this game. Its cover art is blurred here for the same reason. Both are on its Steam store page, behind Steam's own age check.
This reflects how Steam players have tagged the game, not an official age rating, and Coilr does not inspect game content itself. Valve's own maturity description is on the Steam store page. Coilr users can keep games like this off their public profile in settings.
No, but it is small.
In October 2026, Riichi City - Japanese Mahjong averaged 351 players on Steam at once, 9% fewer than the month before. The most Coilr has recorded at once is 886 in July 2026. 217 people are playing Riichi City - Japanese Mahjong on Steam right now. The count now is 24% of the record. These are Steam players only: a game that also runs on its own launcher or on console has players this cannot see.
Latest reading · average in view 345
This game's player count is measured about every 30 hours. Steam allows a limited number of requests per day, so the busiest games are measured every few minutes and quieter ones less often. The shape of the curve is real, the fine detail between points isn't recorded.
30-day average
351
players at once, on Steam
Steam reviews
47%
Mixed
Average playtime
17 h
Coilr players
Coilr players
2
who own it
Average and peak players on Steam at the same time, each month since Coilr started tracking Riichi City - Japanese Mahjong. The change is against the month before.
| Month | Avg. players | Change | Peak players |
|---|---|---|---|
| Oct 2026 (so far) | 329 | −55 | 544 |
| Sep 2026 | 384 | −34 | 697 |
| Aug 2026 | 418 | −71 | 818 |
| Jul 2026 (from first reading) | 489 | — | 886 |
Positive
47%
Total reviews
4,922
Pos / Neg
2,324 / 2,598
% positive by month
No verified owner has reported a time for Riichi City - Japanese Mahjong yet.
Sign in to be the firstHow many tracked owners still play, something raw concurrent counts can't tell you.
Not enough Coilr players tracking this game yet.
Country distribution of Coilr players who own this game.
Inferred from when Riichi City - Japanese Mahjong is busiest each day. A rough estimate of the global playerbase from player-count patterns, not exact player locations.
Most players look to be in Asia-Pacific (~41%).
Players online by hour (UTC)
Busiest around 14:00 with about 634 people in game — 3.8× as many as at 20:00, the quietest hour.

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In October 2026, Riichi City - Japanese Mahjong averaged 351 players on Steam at once, 9% fewer than the month before. The most Coilr has recorded at once is 886 in July 2026.
No, but it is small. In October 2026, Riichi City - Japanese Mahjong averaged 351 players on Steam at once, 9% fewer than the month before. The most Coilr has recorded at once is 886 in July 2026. These are Steam players only: a game that also runs on its own launcher or on console has players this cannot see.
Riichi City - Japanese Mahjong's player activity peaks around 14:00 UTC, which points to its largest audience being in the Asia-Pacific region, an estimated 41% of active players, followed by Americas. (Estimated from global player-count patterns, not exact player locations.)