# Undernauts: Labyrinth of Yomi

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

- Steam appid: 1570510
- Developer: EXPERIENCE
- Publisher: Aksys Games
- Released: 2021 · Genre: RPG · List price: $59.99
- Deal grade: A (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $1.9k to $2.9k per month (mid $2.4k)
- Opportunity score: $5.1k/month at x2.10 dormancy multiplier
- Est. lifetime owners: 6.3k · Est. lifetime net revenue: $94.3k
- Review sentiment: 78% positive across 264 reviews (197 from Steam purchases)
- Review velocity: 6.5 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 4.2 years
- Studio quiet across its whole catalog
- Last build shipped 4.2 years ago
- Store page localized in only 2 language(s)
- Last discounted 0 months ago, 6 sales in the last 12 months
- Proven demand elasticity: x1.8 review velocity during past deep sales

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $4.4k |
| After VAT / sales tax (-13% blended) | $3.8k |
| After refunds (-9.5% median) | $3.5k |
| Net to developer (after Steam 30%) | $2.4k |

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

5, 5, 4, 0, 2, 5, 0, 5, 1, 2, 0, 2, 2, 2, 1, 4, 0, 3, 1, 5, 8, 5, 9, 11

## Estimated acquisition range

$58.3k to $116.7k (2-4x the trailing net annuity of $29.2k/year). Same error range applies.

## Markets by review language

- schinese: 5% (game NOT localized in this language)
- brazilian: 2% (game NOT localized in this language)
- german: 1% (game NOT localized in this language)
- english: 54%
- koreana: 2% (game NOT localized in this language)
- russian: 2% (game NOT localized in this language)
- spanish: 1% (game NOT localized in this language)
- japanese: 35% (game NOT localized in this language)

Localization gap: 46% of measured reviews are written in languages the game does not support (top: japanese). Localizing is likely immediate market expansion.

## Analyst notes (AI-assisted)

A Japanese-style dungeon-crawling RPG from 2021 with a strong 78% positive rating and modest but steady residual revenue.

Undernauts occupies an interesting middle ground: it's a niche JRPG with solid community sentiment (78% positive, 6.5 reviews/mo average) that continues to earn $2.4k/mo residual revenue, yet the developer is inactive and the game has no localization beyond English and Japanese. The $5.1k/mo opportunity suggests price-elasticity room (1.85x sensitivity) and potential for regional expansion or a sequel, but acquisition value is capped by the small lifetime footprint (6.3k units, $94k net lifetime) and lack of franchise momentum. Best fit for a publisher seeking to revive a quiet cult title through fresh discounting, localization into Spanish/German/Simplified Chinese, or licensing the IP to a larger studio.

- Most realistic play: revival
- Risk (tech): Developer (EXPERIENCE) shows no activity for 50+ months; maintenance and bug-fix support will fall to the acquirer.
- Risk (market): Niche JRPG audience; elasticity of 1.85 suggests discounts drive volume, but price-point legitimacy remains contested among players.
- Risk (other): Localization gap of 46% (primarily Japanese-language demand unmet) suggests regional demand may be present but platform signals are noisy.

What players are asking for:
- Post-game content expansion or endgame clarity
- Lower base price or frequent sale rotation
- Better signaling of playtime investment needed

Suggested first moves:
1. Audit localization opportunity in Spanish, German, and Simplified Chinese to address the 46% loc gap; estimate addressable uplift from regional store visibility.
2. Run a controlled discount test at 30-40% off over 2-4 weeks to validate elasticity claims (1.85x) and measure conversion before committing to acquisition.
3. Conduct rights clearance and IP audit on developer EXPERIENCE to confirm ownership transfer feasibility; engage Aksys Games on publishing renewal or sale terms.

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/1570510
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.