Broken Steel, the third downloadable expansion for Fallout 3, introduced at least four new weapons to the game.

Broken Steel is the third downloadable expansion released for Fallout 3. It takes place two weeks after the events of the main storyline. The water purification system has been activated and Project Purity is now a central hub of activity. The Brotherhood of Steel is now sorting out how to distribute the clean water to the Wasteland's inhabitants and has enlisted the player to help wipe out the Enclave for good.

Two new perks have been added to the game with Broken Steel. Puppies! allows players to reincarnate their canine companion, Dogmeat, every time he dies. Nerves of Steel increases the regeneration rate of the player's Action Points.Fallout Wiki: Broken Steel Perks There are also six new achievements worth 150 gamerscore points, and the level cap has been raised from 20 to 30.Official Site: Broken Steel Overview

Broken Steel was released exclusively for the Xbox 360 and PC on May 5, 2009.

1. Heavy Incinerator - Type of flamethrower that works like a mortar
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2. Tesla Cannon - Fires powerful blasts of electricy, but has a long reload time
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3. Tri-Beam Laser Rifle - Extremely powerful ranged laser shotgun
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4. Violator - Carried by Super Mutant Overlords