# ShellMobile: Titan Rampart

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

- Steam appid: 3839810
- Developer: 红景天娱乐
- Released: 2025 · Genre: Casual · List price: $5.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $8.2k to $12.2k per month (mid $10.2k)
- Opportunity score: $10.2k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 5.8k · Est. lifetime net revenue: $11.6k
- Review sentiment: 98% positive across 183 reviews (181 from Steam purchases)
- Review velocity: 203.0 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 7 months ago
- Studio active elsewhere (2 titles tracked), so this one may welcome a partner
- Last build shipped 7 months ago
- Last discounted 1 months ago, 7 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $18.5k |
| After VAT / sales tax (-13% blended) | $16.1k |
| After refunds (-9.5% median) | $14.6k |
| Net to developer (after Steam 30%) | $10.2k |

## Monthly review counts, oldest to newest (1 months)

203

## Markets by review language

- schinese: 98%
- english: 1%
- koreana: 1% (game NOT localized in this language)
- japanese: 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/3839810
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.