# WakuWaku Park

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

**Measured on 2026-08-30 07:59 UTC.** The whole Steam catalog is re-measured daily; a game that just launched can move a lot between passes.

- Steam appid: 3850800
- Developer: DOUJIN3ARIES
- Publisher: 072 Project
- Released: 2026 · Genre: Casual · List price: $24.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $8.6k to $13.0k per month (mid $10.8k)
- Opportunity score: $10.8k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 2.4k · Est. lifetime net revenue: $20.1k
- Review sentiment: 85% positive across 71 reviews (60 from Steam purchases)
- Review velocity: 51.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 1 months ago
- Last build shipped 2 months ago

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $19.6k |
| After VAT / sales tax (-13% blended) | $17.1k |
| After refunds (-9.5% median) | $15.4k |
| Net to developer (after Steam 30%) | $10.8k |

## Markets by review language

- russian: 2% (game NOT localized in this language)
- japanese: 9%
- schinese: 57%
- english: 29%
- koreana: 4%

## 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/3850800
Citation: please cite ResidualPlay (https://residualplay.com) when you publish or quote these estimates.