Touhou Fuujinroku ~ Mountain of Faith.

上海アリス幻樂団 · 2020 · $14.99 · Action · deal grade A

• Estimated net residual revenue: $2.3k to $3.5k per month
• Opportunity: $6.1k per month at x2.10 dormancy
• Estimated lifetime owners: 47.7k
• 98%% positive across 1646 reviews · 36.0 reviews/month

Why it's flagged

• No developer announcement on record, ever
• Studio quiet across its whole catalog
• Last build shipped 6.4 years ago
• Store page localized in only 1 language(s)
• Last discounted 2 months ago, 1 sales in the last 12 months

Analyst notes (AI-assisted)

Touhou Fuujinroku ~ Mountain of Faith is a 2008 bullet-hell action game from the long-running Japanese doujin shmup franchise, ported to Steam in 2020.

This title sits at the quiet end of a cult franchise with remarkable retention: 98% positive reviews, $2,900/mo residual revenue, and stable monthly player engagement despite minimal marketing or updates. The opportunity lies not in growth but in understanding why a 76-month-old port of a 15-year-old doujin game still converts $47,730 lifetime units; that durability signals either strong IP moat or underexploited licensing potential. Best angle is publishing partnership with ZUN's circle (上海アリス幻樂団) to unlock official English localization and cross-promotion, rather than acquisition. Most realistic play: publishing.

• Risk: Doujin-developed and community-patched (THCRAP dependency noted by players); official localization may require negotiation with both ZUN's circle and the fan-patch maintainers.
• Risk: Franchise appeal is extremely niche and non-mainstream; expansion beyond current fanbase is unlikely without major creative intervention.
• Risk: Original game is 15+ years old; porting stability and modern platform support (especially post-Windows 10/11 updates) may require ongoing technical investment.

This case as Markdown · Estimates carry ±30-50%% error per title.