Tomb of Gestalt is a theoretical raid experience for Halo Infinite drawing design inspiration from the raids in Destiny 2, but modifying the formula to match the design principles of the Halo series. The design document outlines both the design considerations involved with translating raid design to Halo and the beat-by-beat content of the raid itself.

The raid is designed to be mostly possible to create using content that already exists within the game with the exception of the final boss.