Here are some of the other DLC's info.
Mothership Zeta
Defy hostile alien abductors and fight your way off of the massive Mothership Zeta, orbiting Earth miles above the Capital Wasteland. Mothership Zeta takes Fallout 3 in an entirely new direction – outer space. Meet new characters and join with them in a desperate bid to escape the Aliens’ clutches. To do so, you’ll wield powerful new weapons, like the Alien Atomizer, Alien Disintegrator, and Drone Cannon, and deck yourself out in brand new outfits, like the Gemini-Era Spacesuit and even Samurai Armor.
Story:
A strange Alien signal is being broadcast throughout the Capital Wasteland, originating from a crashed UFO. Is it a distress call, or something far more sinister? That question is answered when you find yourself beamed aboard an enormous Alien spacecraft, with only one alternative – to fight your way to the bridge of the ship and secure your escape.
Key Features:
•Find and exploit new and destructive alien technology, like the Alien Atomizer and Drone Cannon.
•Explore the vast Mothership and learn the secrets of the Aliens’ master plan.
•Thwart the Aliens’ attempt to stop your escape, and take over the Alien ship before it wreaks havoc on the unsuspecting Earth below.
•Fight against the Alien Invaders, their robot drones, and turn their own horrible experiments against them.
•Ally yourself with an unexpected array of characters, both from the Capital Wasteland and from Earth ’s past.
Operation: Anchorage
Enter a military simulation and fight in one of the greatest battles of the Fallout universe – the liberation of Anchorage, Alaska from its Chinese Communist invaders. Gain access to unique armor, weapons, and exotic gadgets while you build and command interactive Strike Teams to win the battle and defeat the Chinese base.
Story:
The Brotherhood Outcasts are trying to acquire advanced military technology, and the only way to open the vault containing these relics is by completing a tactical simulation only you can enter. In Operation: Anchorage you will re-live the epic Battle of Anchorage from Fallout lore. Find your way into the simulation, stripped of resources, and survive within the rules set up by the simulation’s creators. The Chinese red army is everywhere, so secure the surrounding mountain side and fight your way into the Chinese base.
Key Features:
•Enter a top-secret battle simulator which allows you to test and use both new and old weaponry, with nearly unlimited amounts of ammo at your disposal!
•Adds hours of extended gameplay to explore the Alaskan tundra with a new or existing character.
•Gain access to new weapons, exotic armor, and items…even a Chinese Stealth Suit!
•Choose your strike team to help you through your quest.
•Exclusive new perks and achievements!
Point Lookout
Point Lookout opens up a massive new area of the Wasteland – a, dark, murky swampland along the coast of Maryland. So hop on the ferry to the seaside town of Point Lookout, for the most mysterious and open-ended Fallout 3 DLC adventure yet.
Story:
Buy a ticket and hop onboard the Duchess Gambit, as Tobar the Ferryman takes you to the strange seaside town of Point Lookout. What secrets does the dilapidated boardwalk hold? Who lives in the sprawling mansion? Why is the Punga Fruit so important? And what horrors lie in the depths of the murky swamp?
Point Lookout is the most open-ended DLC yet, and allows you to explore a huge, swampy wasteland any way you’d like. A completely new quest line allows you uncover the town’s hidden secrets and wield powerful new weapons like the Double-Barrel Shotgun against the swamp’s dangerous, and deformed, denizens.
Key Features:
•Discover and explore an entire new area – the beachfront town of Point Lookout, with its decrepit boardwalk and surrounding swamplands loaded with adventure.
•Explore the chilling mystery that pervades this once sleepy town, with a new quest line and open-ended gameplay.
•Encounter unique new swamp denizens and weaponry that will test even the toughest characters.
•Exclusive new perks and achievements!