The Gatalog: A Collection of Chaos is a compilation album by underground rapper and Army of the Pharaohs/Demigodz member Celph Titled. The album was released with a four disc special. Mercer released a compilation titled The Gatalog, a four-disc set of his guest appearances and freestyles, going back to his early releases from 1998, as his official first offering to a thriving fanbase that already viewed him as a seasoned veteran.