Shadow Corridor

Space Onigiri Game LLC · 2019 · $7.99 · Action · deal grade B

Measured on 2026-10-04 21:59 UTC. The whole catalog is re-measured daily; a game that just launched can move fast between passes.

Estimated net residual revenue: $358 to $537 per month
Opportunity: $716 per month at x1.60 dormancy
Estimated lifetime owners: 79.9k
90% positive across 2206 reviews · 10.4 reviews/month

Why it's flagged

Developer silent for 6.7 years
Studio active elsewhere (2 titles tracked), so this one may welcome a partner
Last discounted 0 months ago, 5 sales in the last 12 months

Analyst notes (AI-assisted)

Note written 2026-09-07; the live figures above take precedence over any numbers in it.

A Japanese action-puzzle game where players navigate maze-like corridors under time pressure, with heavy memorization demands.

Shadow Corridor occupies an unusual niche: strong core sentiment (90%+) from a concentrated Korean and Japanese audience, solid residual revenue, and zero promotional activity in 24+ months suggest genuine organic demand rather than fire-sale fatigue. The IP is wholly owned by Space Onigiri (an active, small studio), making full acquisition or publishing renewal straightforward. However, the original game's austere design (no map, punishing difficulty) has been superseded by its 2024 sequel, which offers quality-of-life features the community explicitly requested; the opportunity here is licensing or reviving the back-catalog to funnel players toward the newer title, or acquiring both titles to consolidate positioning. Most realistic play: publishing.

Risk: The sequel (Shadow Corridor 2) now exists and addresses the original's chief usability complaint; the first game may be perceived as obsolete by new players unless positioned as a legacy challenge mode.
Risk: The game lacks Steam achievements, trading cards, and workshop support, limiting engagement hooks and discoverability in a crowded action genre.
Risk: Developer has posted no public updates in 79 months; while the studio is registered as operating, communication dormancy raises questions about post-acquisition support capacity.

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