The short answer
You play detective Connor Raines investigating a young woman’s murder. Radio dialogue with another detective is part of this single-player game.
Radio contact is not co-op
The store’s single-player classification and its description of detective dialogue belong together. The second voice does not establish an online partner, split-screen mode or multiplayer evidence board.
Sources for this section
- Cauchemar: Steam store and Early Access information · Checked 2026-09-13
What the premise tells you
The case involves contradictory traces and a disturbing environment. That is enough to frame the investigation without naming a culprit, asserting a supernatural explanation or inventing a branching ending system.
Sources for this section
- Cauchemar: Steam store and Early Access information · Checked 2026-09-13
Current walkthrough limit
The released-game route, optional evidence, fail states, chapter count and ending requirements still need direct verification. Our investigation pages currently help identify announced tools and prepare useful notes.
Sources for this section
- Cauchemar: Steam store and Early Access information · Checked 2026-09-13
- Loris / Cauchemar: WE ARE FINALLY READY! · Checked 2026-09-13 · Published 2026-09-12
Research checked 2026-09-13. This is a source-based guide; Kingy has not independently play-tested these steps. Evidence and coverage.