X-Risks details the dangers facing transhumanity:

Over 60 creature and machine descriptions, classified by challenge level.

Information on extinction threats, from AIs and aliens to nanoplagues and wormholes.

Coverage of the TITANs, exhumans, exsurgent virus, Factors, and other hostiles.

New exsurgent virus strains, psi sleights, and xenofungi.

Traps for high-tech dungeon crawls.

• Over 60 Creature and Machine Descriptions: Classified by challenge level, these entries provide detailed information on various threats.
• Extinction Threats: Coverage of potential extinction-level events, such as rogue AIs, alien entities, nanoplagues, and wormholes.
• Detailed Coverage of Major Threats: In-depth information on the TITANs, exhumans, exsurgent virus, Factors, and other hostiles.