# Dungeon of the ENDLESS™

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

- Steam appid: 249050
- Developer: AMPLITUDE Studios
- Released: 2014 · Genre: Adventure · List price: $11.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $808 to $1.2k per month (mid $1.0k)
- Opportunity score: $2.1k/month at x2.10 dormancy multiplier
- Est. lifetime owners: 705.8k · Est. lifetime net revenue: $1.8M
- Review sentiment: 85% positive across 14038 reviews (9410 from Steam purchases)
- Review velocity: 15.7 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 3.6 years
- Studio active elsewhere (7 titles tracked), so this one may welcome a partner
- Last build shipped 3.6 years ago
- Store page localized in only 3 language(s)
- Last discounted 0 months ago, 10 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $1.8k |
| After VAT / sales tax (-13% blended) | $1.6k |
| After refunds (-9.5% median) | $1.4k |
| Net to developer (after Steam 30%) | $1.0k |

## Monthly review counts, oldest to newest (24 months)

7, 18, 11, 15, 18, 23, 16, 14, 12, 14, 14, 17, 12, 11, 19, 18, 17, 12, 24, 11, 17, 13, 13, 16

## Estimated acquisition range

$24.2k to $48.5k (2-4x the trailing net annuity of $12.1k/year). Same error range applies.

## Analyst notes (AI-assisted)

Dungeon of the ENDLESS is a roguelike tower-defense RPG hybrid where players manage resources and hero progression while defending a crystal through procedurally generated dungeon floors.

This 2014 indie hit has generated $1.82M lifetime on 706k units with stable 85% positive sentiment, yet earns only $1.01k/mo residually, suggesting pricing power and community appetite for meaningful updates remain untapped. The game's mechanical depth, tower defense, resource management, hero development, appeals to a loyal but quiet playerbase that AMPLITUDE has largely inactive since launch. For a publisher or studio seeking proven IP with genre-hybrid appeal and minimal royalty overhead, this represents low-risk catalog acquisition or a platform for seasonal content and balance refresh.

- Most realistic play: acquisition
- Risk (tech): 43+ months since last developer post suggests codebase may require engine or build-system modernization to sustain long-term visibility on current Steam client and new platforms.
- Risk (market): Roguelike tower-defense saturation has intensified since 2014; the game's hybrid identity may struggle to reach new cohorts without repositioning or meaningful mechanical innovation.
- Risk (other): Difficulty-curve unpredictability and resource-grind balance issues cited in reviews remain unpatched; player onboarding friction may suppress long-tail conversion and retention.

What players are asking for:
- Difficulty balancing and clearer progression feedback to reduce sudden impossible-wall failures
- Tuning of resource-grinding mechanics to feel more rewarding relative to playtime
- Clarification or overhaul of unclear systems (especially dust economy and hero scaling)
- New content or seasonal updates to sustain engagement beyond first playthrough

Suggested first moves:
1. Audit codebase and conduct player-session telemetry analysis to identify exact difficulty-spike triggers and resource-economy friction points; prioritize balance patches that address review complaints without scope creep.
2. Survey existing community (via Steam discussions, Discord if active) on appetite for seasonal content, cosmetics, or new dungeon-floor themes to validate monetization and engagement roadmap.
3. Explore console ports (Switch, PlayStation, Xbox) given genre and visual style compatibility; 32.97% key-share suggests significant non-Steam distribution opportunity that AMPLITUDE may not have exploited.

Generated 2026-08-20 from public signals and player reviews. Directional, not diligence.

## 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/249050
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.