The Contingency is one of the three Endgame Crises that may arise to threaten the entire galaxy in Stellaris. They seek to prevent a technological singularity by eliminating any species capable of creating sentient AI. This insidious threat constantly attempts to hack AI-powered technology and turn it against its creators, making it a particular headache for robot-heavy empires and Machine Intelligences.
Related: Stellaris: Synthetic Ascension Guide
Like every Crisis, the galaxy gets a warning shortly before the Contingency appears. By recognizing the signs and preparing accordingly, you can turn the tables on them and shut down the Contingency once and for all.
The Contingency can potentially appear any time after the Endgame Year set at the beginning of the campaign; by default, the Endgame Year is 2400. The more time passes after the Endgame Year, the more likely a Crisis will be to spawn. Only one Crisis can appear in a campaign, so if a different one appears you won't have to deal with the Contingency.
The Contingency will first make itself known by sending every empire an event alerting them to the presence of the Ghost Signal. Machine empires and any empires with Synthetic pops (regular Synths or those created through the Synthetic Ascension path) will each see a single pop mysteriously disappear each year. These empires receive their first events two years before everyone else, giving them more time to prepare.
If your empire does not have any Synthetic or Machine population, you'll be notified of the Ghost Signal two years after the first disappearance. Two years after that, the Contingency's forces will begin to appear on the map.
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In the time between the Ghost
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