Sky Force Anniversary

Infinite Dreams · 2015 · $9.99 · Action · deal grade C

Measured on 2026-10-04 21:52 UTC. The whole catalog is re-measured daily; a game that just launched can move fast between passes.

Estimated net residual revenue: $124 to $186 per month
Opportunity: $248 per month at x1.60 dormancy
Estimated lifetime owners: 136.0k
92% positive across 2174 reviews · 2.9 reviews/month

Why it's flagged

Developer silent for 7.8 years
Studio inactive: no public activity across 2 tracked titles
Last discounted 0 months ago, 5 sales in the last 12 months

Analyst notes (AI-assisted)

Note written 2026-09-10; the live figures above take precedence over any numbers in it.

Sky Force Anniversary is a vertically scrolling shoot-em-up arcade revival with persistent progression and medal-based challenge runs.

This 2015 port maintains a solid four-figure monthly residual despite nearly three years of developer silence, driven by a devoted core of ~4 current players and a 92% positive review base heavily weighted toward Asian markets (Simplified Chinese: 386 reviews; English: 786). The title sits in an unusual position: profitable on minimal marketing spend, but trapped in limbo by its dormant publisher. For a revival player or indie publisher seeking a polished back-catalog property with proven mechanics and existing monetization infrastructure, Anniversary represents a low-risk resuscitation candidate with untapped potential in mobile cross-promotion and seasonal events. Most realistic play: publishing.

Risk: Developer (Infinite Dreams) is ghost-status with no public activity in ~93 months; contract obligations, source-code access, and IP assignment status require due diligence before any revival campaign.
Risk: Concurrent players have collapsed to single digits despite healthy residuals, suggesting the active community is tiny and difficult to re-engage without significant content or marketing investment.
Risk: Last discount was ~2 months ago; elasticity of -1 indicates pricing or promotional strategy may not be driving volume, and build date is unavailable, raising questions about maintenance and platform-update compliance.

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