# IDUN - Frontline Survival

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

- Steam appid: 2186360
- Developer: IDUN Interactive
- Publisher: Surefire.Games
- Released: 2025 · Genre: Action · List price: $14.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $1.3k to $1.9k per month (mid $1.6k)
- Opportunity score: $2.1k/month at x1.35 dormancy multiplier
- Est. lifetime owners: 21.6k · Est. lifetime net revenue: $108.4k
- Review sentiment: 79% positive across 714 reviews (674 from Steam purchases)
- Review velocity: 12.5 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 14 months
- Studio quiet across its whole catalog
- Last build shipped 14 months ago
- Last discounted 1 months ago, 11 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $2.9k |
| After VAT / sales tax (-13% blended) | $2.5k |
| After refunds (-9.5% median) | $2.2k |
| Net to developer (after Steam 30%) | $1.6k |

## Monthly review counts, oldest to newest (19 months)

336, 75, 57, 18, 23, 17, 9, 7, 7, 15, 11, 13, 19, 5, 33, 11, 5, 11, 10

## Missed seasonal-sale revenue (modeled)

Skipped 4 Steam seasonal sale window(s) in the last 19 months. Running a -50% discount in those windows is modeled at +$26.5k 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

$37.7k to $75.4k (2-4x the trailing net annuity of $18.8k/year). Same error range applies.

## Markets by review language

- german: 3%
- english: 48%
- koreana: 1%
- russian: 5% (game NOT localized in this language)
- spanish: 1%
- japanese: 1%
- schinese: 38%
- french: 2%

## 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/2186360
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.