# Periapsis: Gravity Slingshot

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

- Steam appid: 4520400
- Developer: PcZ Games
- Released: 2026 · Genre: Casual · List price: $5.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $924 to $1.4k per month (mid $1.2k)
- Opportunity score: $1.2k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 864 · Est. lifetime net revenue: $1.7k
- Review sentiment: 80% positive across 30 reviews (27 from Steam purchases)
- Review velocity: 23.0 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 1 months ago
- Studio active elsewhere (5 titles tracked), so this one may welcome a partner
- Last build shipped 2 months ago

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $2.1k |
| After VAT / sales tax (-13% blended) | $1.8k |
| After refunds (-9.5% median) | $1.7k |
| Net to developer (after Steam 30%) | $1.2k |

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

23

## Markets by review language

- schinese: 74%
- brazilian: 4%
- german: 4%
- english: 15%
- russian: 4%

## 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/4520400
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.