# Alone With my StepSister

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

**Measured on 2026-09-08 14:44 UTC.** The whole Steam catalog is re-measured daily; a game that just launched can move a lot between passes.

- Steam appid: 3940480
- Developer: Naughty Narratives
- Released: 2026 · Genre: Casual · List price: $8.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $162 to $243 per month (mid $203)
- Opportunity score: $385/month at x1.90 dormancy multiplier
- Est. lifetime owners: 1.0k · Est. lifetime net revenue: $3.1k
- Review sentiment: 83% positive across 29 reviews (26 from Steam purchases)
- Review velocity: 2.7 reviews/month (6-month average)

## Why it's flagged

- No developer announcement on record, ever
- Store page localized in only 1 language(s)

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $369 |
| After VAT / sales tax (-13% blended) | $321 |
| After refunds (-9.5% median) | $290 |
| Net to developer (after Steam 30%) | $203 |

## Monthly review counts, oldest to newest (5 months)

12, 5, 4, 2, 3

## Missed seasonal-sale revenue (modeled)

Skipped 2 Steam seasonal sale window(s) in the last 5 months. Running a -50% discount in those windows is modeled at +$226 net in total, assuming a unit uplift of x3.0 (industry-typical for old catalog titles). Same ±30-50% error range applies.

## Estimated acquisition range

$4.9k to $9.7k (2-4x the trailing net annuity of $2.4k/year). Same error range applies.

## Markets by review language

- russian: 19% (game NOT localized in this language)
- spanish: 4% (game NOT localized in this language)
- brazilian: 8% (game NOT localized in this language)
- english: 69% (game NOT localized in this language)

Localization gap: 100% of measured reviews are written in languages the game does not support (top: english). Localizing is likely immediate market expansion.

## 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/3940480
Citation: please cite ResidualPlay (https://residualplay.com) when you publish or quote these estimates.