LINE Games' Co-op Comedy Horror QUIET Begins Steam Playtest
The playtest's sound-based stealth mechanic, where even a dropped object can trigger a relentless chase, distinguishes QUIET from typical co-op horror titles and gives LINE Games a chance to tune that tension before the 2026 launch.
Key Facts
- LINE Games began the Steam playtest for QUIET on August 3, 2026.
- QUIET is a cooperative comedy horror game for up to four players, where players are duck-shaped aliens.
- The playtest includes three difficulty levels: Easy, Normal, and Hard, with Normal as the default.
- Play data from the playtest will not carry over to the full version, and controls are keyboard and mouse only.
- QUIET is scheduled for release in 2026 on PC via Steam and supports Japanese.
Reporting from 2 sources: 4Gamer.net, Game Spark.
LINE Games announced on August 3, 2026 that it has started a playtest on Steam for its new PC title QUIET, a cooperative comedy horror game for up to four players. Players take on the role of duck-shaped aliens who crash-land on Earth and must sneak into houses to steal parts needed to repair their spaceship, all while avoiding a supervisor. The game's core mechanic is sound: any noise, such as dropping an object, reveals the player's position, and louder sounds make the supervisor pursue faster and more relentlessly. The playtest lets players challenge the first stage in cooperation with teammates, and LINE Games plans to improve the game's quality based on participant feedback. The full release is scheduled for within 2026, and a play movie showing actual gameplay has also been released. The test includes three difficulty levels: Easy, Normal, and Hard, with Normal as the default. Play data will not carry over to the full version, and controls are currently keyboard and mouse only, though controller support is planned for future updates. The game supports Japanese.
- The playtest's "grandma" enemy, described in the Game Spark piece as "a 'Grandma' Who Has Stopped Being Human," can cling to ceilings and attack players passing underneath, a detail shown in the released trailer.
- Game Spark notes the game supports both single-player and co-op for up to four players, and players follow on-screen tasks to collect items like PCs and TVs from dimly lit houses.
- To select Easy or Hard difficulty in single-player, players must start from "Quick Start," per Game Spark; Normal remains the default.
- Participants can join the ongoing playtest through the "Join Playtest" button on the Steam store page, according to Game Spark.
- The 4Gamer.net piece frames the sound mechanic as the game's defining feature, stating that "even a slight mistake or a single object dropped on the floor can reveal your position."
- Both sources confirm the release window of 2026 and Japanese language support, with Game Spark adding that the game is scheduled for PC (Steam) specifically.
Synthesized by Yomimono from the 2 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.