Cthulhu Mythos RPG: Call of the Crystal Append

Editorial Review

★4.2 / 5 — henhenta editorial rating (our own assessment, not the DLsite official user score)

This expansion positions itself as a substantial post-game extension rather than a mere cosmetic addon, leaning into the cozy-mystery hybrid territory that’s gained traction in the Lovecraftian adaptation space. By pivoting from pure investigation toward slice-of-life activities anchored to a resort setting, Call of the Crystal Append Chapter 2 deliberately softens the cosmic horror formula without abandoning it entirely.

The fishing mechanic deserves specific attention here—it’s not incidental window dressing. The game ties progression directly to fishing level, making it a legitimate gameplay loop rather than optional busywork. This creates an unusual pacing dynamic where players alternate between confronting “mysterious new enemies” with enhanced mechanics and grinding through relaxation activities. The inclusion of fishing bosses suggests the developers understand this hybrid appeal: players want both existential dread and hot spring scenes with their party, and they’re willing to engage fishing as the mechanical bridge between them.

What distinguishes this expansion from standard post-game content is its deliberate focus on “discovering new sides of companions and special relationship developments.” Japanese doujin RPGs often treat companion interactions as decorative; here they’re embedded into every activity tier—hot springs, footbaths, table tennis, games. This structure rewards extended engagement with the cast systematically rather than through scattered story beats.

The requirement for late-game save data signals this is designed for players already invested in the base narrative rather than newcomers, which appropriately narrows scope but deepens depth for its audience.

This is essential for fans who’ve completed the main story and want character-driven downtime without abandoning the supernatural investigation framework entirely. The fishing-to-boss progression loop and companion relationship scaffolding make this a worthwhile extension rather than perfunctory padding.