

Route messages at a remote station's CRT console, choose your responses, and infer the protocol from clues hidden in the signals. Every cycle brings the quiet threat closer through traces left by previous operators.
Overview
Route messages at a remote station's CRT console, choose your responses, and infer the protocol from clues hidden in the signals. Every cycle brings the quiet threat closer through traces left by previous operators.
Description
Clue-driven channel routing and response decisions
A protocol learned through traffic and altered across cycles
Persistent operator notes, discoveries, archive, and statistics
An endless shift with three optional outcomes that do not end the game
Danger-reactive CRT presentation and procedural audio identity
Mouse and keyboard support with accessibility options
In-game interface and text support for 29 languages
The night shift has begun. The console is open. All you have are incoming messages, notes from previous operators, and the decisions the system expects from you.
SIGNAL is an atmospheric terminal game built around reading and inference. Examine every transmission, understand the source's behavior, choose the appropriate channel or response, and observe the consequence at the station. The protocol is never handed to you as a list: the first shift teaches the basic operations through live traffic, while the remaining rules must be inferred from patterns.

Examine frequencies, codes, deviations, and language patterns in incoming transmissions.
Route each message to the right channel or choose the appropriate operator response.
Compare source behavior and record discovered rules in your operator notes.
Keep the console stable as wrong decisions increase danger and terminal distortion.
As cycles advance, traffic, rules, and the station's behavior change. Lines left by previous operators, your own notes, discoveries, and statistics await you on later shifts. Operators who remain at the console long enough may encounter three optional outcomes that can be recorded without ending the shift. Recording an outcome does not end the game: the line stays open and the shift continues.
A live CRT console sits inside an original station room, with three phosphor profiles, danger-reactive distortion, and procedural terminal audio that responds to the game's decisions. As you approach CONTACT, the reliability of the screen and its audio layers begins to change.
Keyboard and mouse support
Reduced CRT effects
Reduced motion
High contrast mode
Timing assist for messages
Windowed and fullscreen play
Operator archive, persistent notes, and detailed statistics
Interface and text support for 29 languages
Steam achievements and an anonymous operator depth leaderboard
The system will not tell you how many cycles you can endure. Only the next signal arrives.
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