Maptacular Pack
From Halopedia, the Halo wiki
The Maptacular Pack is a downloadable content package for Halo 2. The largest to date, it gives players the ability to play on Backwash, Elongation, Gemini, Relic, and Terminal. It was released on July 5, 2005 for $11.99 and made permanently free on August 30, 2005. The Maptacular Pack content is also included in Halo 2 Multiplayer Map Pack and the PC version of Halo 2.
Maptacular Pack takes up 222 MB on the Xbox 360's HDD.[verification needed]
