# Touhou Kanjuden ~ Legacy of Lunatic Kingdom.

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

- Steam appid: 937580
- Developer: 上海アリス幻樂団
- Publisher: Mediascape Co., Ltd.
- Released: 2019 · Genre: Action · List price: $14.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $1.4k to $2.1k per month (mid $1.7k)
- Opportunity score: $3.7k/month at x2.10 dormancy multiplier
- Est. lifetime owners: 60.2k · Est. lifetime net revenue: $194.1k
- Review sentiment: 98% positive across 1615 reviews (1506 from Steam purchases)
- Review velocity: 21.7 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 4.6 years
- Studio quiet across its whole catalog
- Last build shipped 4.6 years ago
- Store page localized in only 1 language(s)
- Last discounted 2 months ago, 1 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $3.2k |
| After VAT / sales tax (-13% blended) | $2.8k |
| After refunds (-9.5% median) | $2.5k |
| Net to developer (after Steam 30%) | $1.7k |

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

18, 18, 8, 10, 11, 20, 9, 16, 12, 18, 19, 19, 29, 19, 21, 16, 13, 12, 10, 26, 17, 10, 42, 25

## Estimated acquisition range

$41.9k to $83.8k (2-4x the trailing net annuity of $20.9k/year). Same error range applies.

## Analyst notes (AI-assisted)

Touhou Kanjuden is a 2019 bullet-hell action game from ZUN's Shanghai Alice collective, the 15.5th entry in Japan's most prolific indie shooter franchise.

This title generates $1.7k-$2.1k/mo in residual revenue on a $14.99 price point with 98% positive reviews and consistent monthly velocity (10-42 sales), despite zero developer communication in 4.5 years. The opportunity lies not in acquisition (ZUN retains all IP and maintains a hands-off publishing model) but in understanding why a dormant, niche, technically challenging game sustains steady organic demand. For publishers or revival teams, the play is licensing and localization: international marketing and platform expansion could unlock the existing Touhou fanbase's willingness to pay, evidenced by 60k lifetime units at full price with no major discounting.

- Most realistic play: licensing
- Risk (market): Bullet-hell genre has limited mainstream appeal; player base is self-selected and highly skill-gated, constraining ceiling.
- Risk (other): Developer (Shanghai Alice/ZUN) historically publishes independently and rarely engages with external partners, limiting intervention surface.
- Risk (tech): No updates in 55 months suggests technical debt or platform drift; porting or expanding may require significant engineering work.

What players are asking for:
- Difficulty balancing or optional assist modes for skill progression (players cite Clownpiece boss as hard wall)
- Character art improvements (multiple reviews flag portrait quality vs. ZUN's past work)
- Localization beyond Japanese; current single-language footprint likely suppresses reach

Suggested first moves:
1. Secure a licensing agreement with ZUN (via Mediascape Co., Ltd. as current publisher liaison) for English localization, console ports (Switch/PS5), and regional marketing in non-Japanese markets.
2. Conduct a player survey via existing Steam community hub on desired QoL features (difficulty presets, graphics settings, UI clarity) to inform a lightweight content update without core redesign.
3. Analyze the 6.7% key-reseller distribution and $194k lifetime net against seasonal Touhou fandom events (convention tie-ins, anime releases) to identify marketing multipliers and cross-IP bundle opportunities.

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/937580
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.