# Hello Love: 18 Again

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

- Steam appid: 3167180
- Developer: 念念而忘(Echofall Studio)
- Publisher: 盛澜互娱
- Released: 2025 · Genre: Casual · List price: $19.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $5.5k to $8.2k per month (mid $6.8k)
- Opportunity score: $6.8k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 67.7k · Est. lifetime net revenue: $453.7k
- Review sentiment: 93% positive across 2383 reviews (2115 from Steam purchases)
- Review velocity: 40.7 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 3 months ago
- Studio active elsewhere (2 titles tracked), so this one may welcome a partner
- Last build shipped 16 months ago

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $12.4k |
| After VAT / sales tax (-13% blended) | $10.8k |
| After refunds (-9.5% median) | $9.7k |
| Net to developer (after Steam 30%) | $6.8k |

## Monthly review counts, oldest to newest (19 months)

1077, 181, 134, 87, 61, 65, 129, 44, 29, 51, 32, 57, 24, 14, 144, 23, 19, 19, 25

## Markets by review language

- french: 0% (game NOT localized in this language)
- german: 1% (game NOT localized in this language)
- koreana: 2% (game NOT localized in this language)
- spanish: 0% (game NOT localized in this language)
- brazilian: 0% (game NOT localized in this language)
- english: 8%
- russian: 1% (game NOT localized in this language)
- japanese: 1%
- schinese: 87%

## 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/3167180
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.