# CARTAGRA

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

- Steam appid: 4290390
- Developer: Innocent Grey
- Publisher: MangaGamer
- Released: 2026 · Genre: Adventure · List price: $34.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $6.5k to $9.7k per month (mid $8.1k)
- Opportunity score: $8.1k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 1.8k · Est. lifetime net revenue: $21.0k
- Review sentiment: 93% positive across 90 reviews (56 from Steam purchases)
- Review velocity: 27.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 1 months ago
- Studio active elsewhere (9 titles tracked), so this one may welcome a partner
- Last build shipped 1 months ago
- Store page localized in only 2 language(s)
- Last discounted 1 months ago, 1 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $14.6k |
| After VAT / sales tax (-13% blended) | $12.7k |
| After refunds (-9.5% median) | $11.5k |
| Net to developer (after Steam 30%) | $8.1k |

## Monthly review counts, oldest to newest (2 months)

35, 20

## Missed seasonal-sale revenue (modeled)

Skipped 2 Steam seasonal sale window(s) in the last 2 months. Running a -50% discount in those windows is modeled at +$8.1k net in total, assuming a unit uplift of x3.0 (industry-typical for old catalog titles). Same ±30-50% error range applies.

## Markets by review language

- english: 15%
- russian: 9% (game NOT localized in this language)
- schinese: 76%

## Methodology

Units are estimated from Steam-purchase reviews times a release-cohort multiplier (Boxleiter method, 20-75x by year). 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/4290390
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.