# Legends of Heropolis DX

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

- Steam appid: 3042830
- Developer: Kairosoft Co.,Ltd
- Released: 2025 · Genre: Adventure · List price: $10.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $209 to $313 per month (mid $261)
- Opportunity score: $418/month at x1.60 dormancy multiplier
- Est. lifetime owners: 2.0k · Est. lifetime net revenue: $7.3k
- Review sentiment: 63% positive across 101 reviews (62 from Steam purchases)
- Review velocity: 2.8 reviews/month (6-month average)

## Why it's flagged

- No developer announcement on record, ever
- Studio active elsewhere (43 titles tracked), so this one may welcome a partner
- Last build shipped 18 months ago

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $474 |
| After VAT / sales tax (-13% blended) | $412 |
| After refunds (-9.5% median) | $373 |
| Net to developer (after Steam 30%) | $261 |

## Monthly review counts, oldest to newest (11 months)

41, 1, 1, 1, 0, 0, 0, 2, 2, 3, 10

## Estimated acquisition range

$6.3k to $12.5k (2-4x the trailing net annuity of $3.1k/year). Same error range applies.

## Markets by review language

- schinese: 45%
- english: 24%
- koreana: 7%
- japanese: 24%

## 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/3042830
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.