'Cold Storage is a Halo 3 multiplayer map. It is a remake of the Halo: Combat Evolveds Chill Out map, and was released for free on the 7th of July, 2008.
Cold Storage was announced by Bungie at MLG San Diego on June 14, 2008. During development, it was codenamed "Smuggler". Bungie has also stated that Cold Storage will be featured in all play lists that previously required the Legendary Map Pack.
Bungie made an official statement online about the level in their Bungie Weekly Update on June 20. It was first shown in an exhibition game between Bungie members; Lukems and Shishka, and MLG Pros; Karma and Legend, which served as the map's debut.