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Official Site: Bethesda Softworks

There are five pieces of downloadable content for the Bethesda action role-playing game Fallout 3. Each downloadable content adds new missions, new locales to visit, and new items for the player to make use of. Bethesda's Todd Howard first confirmed during E3 2008 that downloadable content would be prepared for the Xbox 360 and Windows versions of Fallout 3. Of the five, Broken Steel has the largest effect on the game, altering the ending, increasing the level cap to 30, and allowing the player to continue playing past the end of the main quest line. The Game of The Year edition of Fallout 3 includes the full game and all five pieces of downloadable content.

The downloadable content was originally exclusive to Xbox Live and Games for Windows. However, in May 2009, Bethesda announced that the existing DLC packs (Operation: Anchorage, The Pitt and Broken Steel) would be made available for the PlayStation 3; the later two (Point Lookout and Mothership Zeta) were released for all platforms.

Operation: Anchorage is the first Fallout 3 downloadable content pack, and takes place as a virtual reality "military simulation" in the main game where the player character is stripped of their equipment and is forced to use the replacements provided. The content focuses on the titular event in the Fallout timeline before the Great War took place, in which the United States Army liberated Anchorage, Alaska, from Chinese forces. The pack contains several new quests, new items, and adds four new achievements. Gameplay within the simulation is different than the main game; health and ammo are replenished by stations in certain areas of the simulation world, items functionally do not suffer from decay (the items actually do decay, but have a health so high that it is virtually impossible to affect performance), and enemy corpses disappear instead of allowing the player to loot them for supplies.

Operation: Anchorage was released in North America and Europe on January 27, 2009 on Xbox Live and Games for Windows Live. Although the content was scheduled for release on the PlayStation 3 in June 2009, the final week of June's PlayStation Store updates did not include it. Bethesda released information suggesting that the delay was due to their desire to iron out all of the bugs before release as well as test compatibility between DLCs. Operation: Anchorage, along with The Pitt, were released on October 1, 2009, for PS3.

Aliens (Fallout) has not been a contender in any CBUB matches.