The Bonus Map Pack was the first downloadable content package for Halo 2, released on April 25, 2005 alongside the Killtacular Pack. It added two new maps to Halo 2: Containment and Warlock. The pack was released as a free download sponsored by Mountain Dew, and was required in order to play Halo 2 Matchmaking over Xbox Live before its shutdown in 2010. The map pack was later included in the releases of the Halo 2 Multiplayer Map Pack, Halo 2 PC port and Halo: The Master Chief Collection.