Atelier Sophie: The Alchemist of the Mysterious Book DX

KOEI TECMO GAMES CO., LTD. · 2021 · $39.99 · RPG · deal grade B

Measured on 2026-10-05 09:40 UTC. The whole catalog is re-measured daily; a game that just launched can move fast between passes.

Estimated net residual revenue: $1.9k to $2.8k per month
Opportunity: $3.7k per month at x1.60 dormancy
Estimated lifetime owners: 39.0k
90% positive across 1052 reviews · 9.3 reviews/month

Why it's flagged

Developer silent for 2.7 years
Studio active elsewhere (71 titles tracked), so this one may welcome a partner
Store page localized in only 4 language(s)
Last discounted 0 months ago, 9 sales in the last 12 months

Analyst notes (AI-assisted)

Note written 2026-08-22; the live figures above take precedence over any numbers in it.

A 2021 Japanese alchemy RPG from Koei Tecmo featuring crafting, character relationships, and a cozy narrative set in a magical world.

Atelier Sophie DX generates $2.3k/mo residual revenue on a $310k lifetime base with 91% positive sentiment despite zero discounting in 12 months and minimal developer engagement. The franchise entry-point positioning, strong community affection for atmosphere and character writing, and dormant marketing suggest either a quiet long-tail catalog title worth passive monetization or a candidate for modest revival if Koei Tecmo decides to cross-promote the Mysterious trilogy. Not a high-urgency acquisition, but reliable backlist performance. Most realistic play: watch.

Risk: Japanese RPG/alchemy subgenre has niche appeal; mainstream awareness is minimal despite 1,038 lifetime reviews.
Risk: Developer posted 31 months ago; long radio silence may signal deprioritization by Koei Tecmo, though studio remains operationally active.
Risk: Game is now three years old on an engine that may face deprecation or compatibility issues with future OS updates.

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