# The Prince of Tennis Sweet School Festival ~♡-40 and more...~

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

**Measured on 2026-09-06 02:51 UTC.** The whole Steam catalog is re-measured daily; a game that just launched can move a lot between passes.

- Steam appid: 3907350
- Developer: KONAMI
- Released: 2026 · Genre: Adventure · List price: $49.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $2.1k to $3.2k per month (mid $2.7k)
- Opportunity score: $2.7k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 1.0k · Est. lifetime net revenue: $16.8k
- Review sentiment: 100% positive across 43 reviews (25 from Steam purchases)
- Review velocity: 6.4 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 1 months ago
- Studio active elsewhere (23 titles tracked), so this one may welcome a partner
- 42% of reviews come from key activations (excluded from revenue estimates)
- Store page localized in only 4 language(s)

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $4.9k |
| After VAT / sales tax (-13% blended) | $4.2k |
| After refunds (-9.5% median) | $3.8k |
| Net to developer (after Steam 30%) | $2.7k |

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

12, 10

## Markets by review language

- english: 17%
- koreana: 4% (game NOT localized in this language)
- japanese: 17%
- schinese: 62%

## 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/3907350
Citation: please cite ResidualPlay (https://residualplay.com) when you publish or quote these estimates.