ZERO PROTOCOL

You take the role of security chief at the IAS Antarctic Research Complex, where a disaster has left the isolated facility dangerous and its secrets unexplained. Explore its rooms and piece together what happened through terminals, notes, and other clues.

Progress by searching for passwords, keycards, and useful items; solving puzzles; and repairing or combining equipment. A camera lets you capture visual clues such as codes for reference as you explore.

Monsters make exploration risky, and firearms and other resources are limited. Your sanity affects what you perceive, including clues that may be revealed at certain levels. Choices lead to multiple endings.

The supplied reviews often praise the isolated sci-fi atmosphere, retro visuals, and puzzle-focused exploration, with some players also enjoying how sanity affects what can be seen and found. Story and multiple endings appeal to many reviewers, while opinions are more divided on combat, puzzle clarity, and the game's short length. A recurring criticism is that enemies—especially spiders—can make encounters frustrating, and some players report awkward mouse controls or technical and save-related problems.