# The Spire of Mech Zero

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

- Steam appid: 3263280
- Developer: ZZ Game
- Released: 2024 · Genre: Indie · List price: $4.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $963 to $1.4k per month (mid $1.2k)
- Opportunity score: $2.0k/month at x1.65 dormancy multiplier
- Est. lifetime owners: 4.3k · Est. lifetime net revenue: $6.3k
- Review sentiment: 92% positive across 146 reviews (134 from Steam purchases)
- Review velocity: 33.0 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 22 months
- Studio quiet across its whole catalog
- Last build shipped 22 months ago
- Store page localized in only 2 language(s)

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $2.2k |
| After VAT / sales tax (-13% blended) | $1.9k |
| After refunds (-9.5% median) | $1.7k |
| Net to developer (after Steam 30%) | $1.2k |

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

161, 1, 1, 1, 1

## Estimated acquisition range

$28.9k to $57.8k (2-4x the trailing net annuity of $14.4k/year). Same error range applies.

## Markets by review language

- english: 1%
- schinese: 99%

## 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/3263280
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.