Found Audio Log

Recordings are placed as collectibles. Each holds a monologue, often part of a numbered series scattered across a location, and playback continues over ordinary movement and combat so the fiction advances while control stays with the player. Most implementations add a menu where logs can be replayed, which matters because dialogue heard during a firefight is dialogue half missed. Voices belong to people who are usually dead by the time you hear them.

System Shock introduced the device in 1994 as a direct consequence of its setting. Looking Glass Technologies had a research station full of corpses, a protagonist who wakes up alone, and no cutscene budget, so email logs from the dead crew became the only way to stage a cast that could not appear. Recording audio was also far cheaper than animating characters, which made the technique attractive long after the technical constraint had lifted.

Few narrative devices have been imitated this literally. Audio logs solved the problem of story in a first-person game so cleanly that they became a default, then a joke: an entire species of character who narrates their own doom into a recorder for no plausible reason. Defenders point out that the format survives because it works, letting writers control pace and mood while the player is free to keep playing.