July 7, or 7/7, has long been heralded as “Bungie Day” among “Halo” players and fans of the renowned developer. This year, Bungie is celebrating this day with the release of new multiplayer map Cold Storage, as well as new gamer pics and a Bungie Day Xbox 360 dashboard theme, all for free on Xbox LIVE Marketplace. The “Halo 3” Legendary Map Pack will also drop in price to 600 Microsoft points in honor of the occasion.

The tradition of Bungie Day was born in part due to the significance the number 7 has played in all of Bungie’s games over the years, including the “Halo” series (7 Halo rings, Master Chief is Spartan 117, etc.), and each year the developer makes a point to use this date to treat fans to something special – usually new content, a free download or other surprise.

This year marks the best “Bungie Day” yet, as eight million plus “Halo 3” players can now download Cold Storage, a free new multiplayer map inspired by the original map Chill Out found in “Halo: Combat Evolved.” The Cold Storage facility was once a vibrant, active research center on Installation 05. An accidental contamination resulted in an unforeseen outbreak, which compromised the Forerunner center. Now, emptied and silent, watched only by a local caretaker, the abandoned structure serves as a reminder of how something as powerful as science is ultimately beholden to nature.