Bioshock sales are doing incredibly well and that's what happens when you make a good title unlike Kane & Lynch. At least the review scores and advertisements are right. Well, the folks over at 2K Games just informed us that downloadable content for Bioshock is now available via Xbox Live Marketplace and a PC patch.

New downloadable content includes:

• Four Plasmids and Gene Tonics
• Sonic Boom: Hurls creatures and objects back with a blast of force
• EVE saver: Enables Plasmids to use less EVE
• Vending Expert: Reduces prices in the vending machines
• Machine Buster: Increases the amount of damage players deal to cameras, bots and turrets

Achievements (exclusive to Xbox 360):

• Xbox 360 players can gain 100 points for “Brass Balls,” by beating BioShock on the “hard” difficulty setting without dying

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