# Once Upon A KATAMARI

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

- Steam appid: 1880620
- Developer: RENGAME
- Publisher: Bandai Namco Entertainment Inc.
- Released: 2025 · Genre: Action · List price: $59.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $9.1k to $13.6k per month (mid $11.3k)
- Opportunity score: $11.3k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 42.7k · Est. lifetime net revenue: $858.1k
- Review sentiment: 92% positive across 1652 reviews (1333 from Steam purchases)
- Review velocity: 22.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 6 months ago
- Last build shipped 5 months ago
- Last discounted 1 months ago, 4 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $20.5k |
| After VAT / sales tax (-13% blended) | $17.9k |
| After refunds (-9.5% median) | $16.2k |
| Net to developer (after Steam 30%) | $11.3k |

## Monthly review counts, oldest to newest (10 months)

635, 384, 120, 79, 25, 32, 16, 15, 10, 37

## Missed seasonal-sale revenue (modeled)

Skipped 2 Steam seasonal sale window(s) in the last 10 months. Running a -50% discount in those windows is modeled at +$116.4k 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: 77%
- koreana: 4% (game NOT localized in this language)
- spanish: 1%
- japanese: 14%
- brazilian: 1% (game NOT localized in this language)
- french: 1%
- russian: 0% (game NOT localized in this language)
- schinese: 1%
- german: 1%

## 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/1880620
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.