The Demon King: Harem

KAWAGUCHI · 2026 · $4.99 · RPG · deal grade D

Measured on 2026-09-24 05:15 UTC, 12 days ago. The whole catalog is re-measured daily; a game that just launched can move fast between passes.

Estimated net residual revenue: $695 to $1.0k per month
Opportunity: $869 per month at x1.00 dormancy
Estimated lifetime owners: 2.2k
91% positive across 65 reviews · 20.8 reviews/month

Why it's flagged

Developer active, last post 2 months ago
Studio active elsewhere (2 titles tracked), so this one may welcome a partner
Store page localized in only 4 language(s)

Analyst notes (AI-assisted)

Note written 2026-08-23; the live figures above take precedence over any numbers in it.

A 2026 adult fantasy RPG where the player character reincarnates as a demon king and builds a harem while navigating a dark-fantasy kingdom.

The Demon King: Harem shows modest but real staying power: 93.9% positive sentiment, $1.13k/mo residual revenue, and a 30% still-playing rate despite zero discounts in 48 months and minimal developer communication. The game is niche (7 current players, 1.2k lifetime units) but remarkably durable for a solo adult-game title. For a small publisher or IP aggregator, the dormant monetization opportunity ($1.69k/mo ceiling) and localization gap (13.9%, esp. Russian) suggest room for light revival without heavy investment. Risks are real: thread-thin margins, no roadmap signals, and dependency on a narrow adult-fantasy audience. Most realistic play: publishing.

Risk: Niche adult-game category with volatile discovery and content moderation exposure; review count (27/mo) and cohort size (7-12 CCU) are too small to sustain paid marketing.
Risk: Zero discounts in 4 years and no developer posts in 10 months suggest inactive stewardship; bug reports (wall clipping, tutorial clarity) remain unfixed.
Risk: Missing standard RPG UI affordances (character portrait, status menu) and narrative beats (persistent party) frustrate retention; 4-6 hour median playtime leaves limited replay value.

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