# Agari — Riichi Mahjong

> ResidualPlay case file: an overlooked Steam game still earning residual revenue. Estimates carry a ±30-50% error range per title.

**Measured on 2026-09-07 08:23 UTC.** The whole Steam catalog is re-measured daily; a game that just launched can move a lot between passes.

- Steam appid: 4541910
- Developer: Ryan Sullenberger
- Released: 2026 · Genre: Casual · List price: $6.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $361 to $541 per month (mid $451)
- Opportunity score: $586/month at x1.30 dormancy multiplier
- Est. lifetime owners: 1.0k · Est. lifetime net revenue: $2.3k
- Review sentiment: 96% positive across 26 reviews (25 from Steam purchases)
- Review velocity: 7.7 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 0 months ago
- Store page localized in only 2 language(s)
- Last discounted 1 months ago, 2 sales in the last 12 months

## Where a gross dollar goes (monthly, at current velocity)

| Stage | USD/month |
|---|---|
| Gross storefront sales | $819 |
| After VAT / sales tax (-13% blended) | $712 |
| After refunds (-9.5% median) | $645 |
| Net to developer (after Steam 30%) | $451 |

## Monthly review counts, oldest to newest (3 months)

13, 3, 8

## Estimated acquisition range

$10.8k to $21.6k (2-4x the trailing net annuity of $5.4k/year). Same error range applies.

## Markets by review language

- french: 5% (game NOT localized in this language)
- english: 86%
- japanese: 5% (game NOT localized in this language)
- schinese: 5% (game NOT localized in this language)

Localization gap: 14% of measured reviews are written in languages the game does not support (top: schinese). Localizing is likely immediate market expansion.

## Methodology

Units are estimated from Steam-purchase reviews times a release-cohort multiplier, 40-75x by year. Cohorts from 2020 on are calibrated against 182 sales milestones announced by developers; older ones follow the published Boxleiter tables. Revenue uses an effective price (lifetime discounts and regional pricing) and nets out VAT (~13%), refunds (~9.5%) and Steam's 30% cut: roughly 55% of gross reaches the developer.

Source: https://residualplay.com/game/4541910
Citation: please cite ResidualPlay (https://residualplay.com) when you publish or quote these estimates.