Dual Protocol Story: The Castellari Case, Eva & Miles

By The Night Desk · Updated October 1, 2026

Spoiler policy: this page only uses the Steam store page, the developers’ announcements and the official screenshots. Nothing from the full game’s story is here.

The case

A murder has happened at Castellari Manor, which the store page calls “the city’s most prestigious estate”. The developers’ framing is that the case is “too deep to be solved from a single perspective”. Only by putting the field evidence and the central records together does the “veil of mystery over the Castellari murder” lift.

The investigators

Agent Eva is the field investigator. She follows the trail “behind locked doors”, touches the physical evidence, and operates the mechanisms in the manor. She “finds the clues Miles cannot reach”.

Analyst Miles runs the operation from analog terminals. He dives into the archives and decrypts technical blueprints. He “analyzes the complex data Eva cannot decipher”.

Which one should you play? See Eva or Miles.

The setting

The game describes “a bleak universe where the technological texture of the 90s collides with classic noir atmosphere”. In practice:

• CRT flicker and heavy shadows. The official screenshots use deep greens, warm lamp light and dark rooms.
• Vintage computers. You type terminal commands by hand and scan documents.
• Analog machinery. The screenshots include a satellite dish controller, a telescope, a radio-style terminal and a letter-dial lock.

Evidence seen in the official screenshots

These come from the ten screenshots on the Steam page. They show the kind of evidence you will handle, not the solution to anything.

• A personnel file with a fingerprint, blood type and phone number
• A revolver with the caption “There are two fingerprints…”
• An inventory database terminal with a vehicle request screen
• A letter-dial cylinder lock with three rows of letters
• Isometric scenes: a farmyard (“The rest of the road is too rough”), a cabin living room with a fireplace, and a garage with a station wagon on a lift

Tone

It is a noir mystery, not an action game, and Steam lists it as playable without timed input. The age ratings differ by country: Germany’s USK rates it 6+ and Brazil 10+ for frightening content, while Indonesia rates it 18+ for horror and violence. Expect a dark, tense atmosphere rather than gore.