Warning! This article contains information about the events in the book.
The Cataclyst was an artifact in the OASIS. It was sold in an online auction, and purchased by an anonymous bidder. In the battle with the Sixers over the Third Gate, after seeing no other choice, the Sixers detonated the Cataclyst, causing Parzival's friends' avatars to die along with everyone else in the sector after the three opened the Gate. The planet was also heavily damaged, but it recovered. Parzival, since he'd played a perfect game of Pac-Man at the museum, survived with an extra life.