# Alien Apocalypse

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

**Measured on 2026-08-30 07:39 UTC.** The whole Steam catalog is re-measured daily; a game that just launched can move a lot between passes.

- Steam appid: 3635510
- Developer: Umbu Games
- Released: 2026 · Genre: Action · List price: $17.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $2.8k to $4.2k per month (mid $3.5k)
- Opportunity score: $4.6k/month at x1.30 dormancy multiplier
- Est. lifetime owners: 1.0k · Est. lifetime net revenue: $6.3k
- Review sentiment: 55% positive across 29 reviews (26 from Steam purchases)
- Review velocity: 23.3 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 0 months ago
- Last build shipped 0 months ago
- Store page localized in only 1 language(s)

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $6.4k |
| After VAT / sales tax (-13% blended) | $5.6k |
| After refunds (-9.5% median) | $5.0k |
| Net to developer (after Steam 30%) | $3.5k |

## Estimated acquisition range

$84.5k to $169.0k (2-4x the trailing net annuity of $42.2k/year). Same error range applies.

## Markets by review language

- french: 8% (game NOT localized in this language)
- german: 8% (game NOT localized in this language)
- english: 75%
- russian: 4% (game NOT localized in this language)
- japanese: 4% (game NOT localized in this language)

Localization gap: 25% of measured reviews are written in languages the game does not support (top: german). Localizing is likely immediate market expansion.

## Analyst notes (AI-assisted)

_Note written 2026-08-29 from that day's data; the figures in the header are live and supersede any numbers here._

Early Access top-down survival action game where players defend against an alien invasion, mechanically similar to Project Zomboid but with a sci-fi skin and notable stability issues.

Alien Apocalypse sits in an unusual position: it has drawn meaningful player engagement (solid three-figure monthly residuals, 55% positive rate despite harsh early-access conditions) and reviews are trending upward, yet the game is actively broken on several fronts (graphics reset, controller bugs, wall-phase collision, balance problems). The developer posted just hours ago and the build is days old, suggesting active iteration. This is a watch, not a buy: the title's appeal hinges entirely on whether Umbu Games can fix core stability and balance within the next 2-3 months. If they do, revival potential exists. If they don't, the game will quietly lose its small but vocal audience.

- Most realistic play: watch
- Risk (tech): Multiple reports of critical bugs (settings reset, collision phasing, controller mapping broken, freezes) that undermine core playability and discourage repeat sessions.
- Risk (market): Players consistently invoke Project Zomboid as the standard and find Alien Apocalypse derivative and cruder; establishing differentiation will be harder than iterating.
- Risk (other): Solo-player experience lacks tactical pause; AI scales aggressively even on easy difficulty, creating a wall for new players and narrowing the addressable audience.

What players are asking for:
- Gamepad/controller support for twin-stick feel
- Tactical pause in single-player mode
- Balanced AI difficulty, especially on easy mode
- Fix collision bugs and wall-phase exploits

Suggested first moves:
1. Monitor the next 4-6 weeks of patch cadence and bug-fix velocity; a revival play only makes sense if stability improves measurably and reviews trend positive.
2. If Umbu Games stabilizes the game, evaluate a publishing or live-service partnership focused on marketing to the overlooked survival-action audience and iterating on difficulty/balance with dedicated QA.
3. Separately assess whether the IP or core mechanics could be licensed or ported to other platforms (console, mobile) once the core PC experience is solid; current state rules that out.

Generated 2026-08-29 from public signals and player reviews. Directional, not diligence.

## 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/3635510
Citation: please cite ResidualPlay (https://residualplay.com) when you publish or quote these estimates.