Paradox Interactive announces the Argos Naval Yard is now available to expand Sword of the Stars (Sword of the Stars: A Murder of Crows or Sword of the Stars Ultimate Collection is required). The game is being released via digital distribution, and it is now available on GamersGate and Impulse, while Direct2Drive is still accepting preorders and Steam's listing for the add-on is not yet online. Update: The Direct2Drive and Steam editions are now also for sale. Here's the deal, including a Plasmatics reference for Wendy O. Williams fans:

Paradox Interactive today announced that the new expansion pack, Argos Naval Yard, to the critically acclaimed 4X space strategy game series Sword of the Stars is releasing today. The game will be available on the four major digital download portals: GamersGate, Impulse, Steam and Direct2Drive.

Argos Naval Yard is an expansion to Sword of the Stars and requires previously released expansions or Sword of the Stars Ultimate Collection. Argos Naval Yard will provide players with:

• 19 new technologies, including Advanced Drones, Overthrusters, two new Satellite designs, defensive Interceptor micro-missiles, and Polarized Plasmatics, unlocking a new weapon type
• Over 75 new ship sections to build
• 10 new weapons, including the new inertial cannons, Kelvinic torpedoes, and the fearsome Rail Cannon
• 3 New Scenarios
• Single Player / Multi-player with co-op scenario maps

Sword of the Stars: Argos Naval Yard is available on GamersGate, Impulse, Steam and Direct2Drive for a SRP of €7.49, $8.99 and £6.99.