Steam playtest
The Doorway Effect
A signup control was found on 2026-10-29 09:13. Admission is decided by the developer.
Participation is not guaranteed — access to a playtest is allocated by the developer and the rules can change. How it works · Voluntary support for the site
The Doorway Effect is a 1-4-player co-op psychological horror roguelike. Explore the inner world of a dying man's mind, racing through door after door in a labyrinth of nightmares. Encounter traumas incarnate, and discover the secrets locked within. If you can survive long enough...
What a Steam playtest is
A playtest is a test build of a game that developers offer before release. On Steam you sign up for testing on the game's page. Whether you get access immediately, or the developer invites you first, is decided by the developer and can change.
More games with a playtest
This game is part of the Playtest Atlas overview — 3645 games in the catalogue.