PC (Microsoft Windows)24 липня 2009 р.
Випущено ✓ 
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Killing Floor: Outbreak Character Pack
The Outbreak Character Pack adds 4 new and unique playable characters for Killing Floor as Downloadable Content. Once you have bought the pack, they will become selectable in the character selection screen in-game.
Action
Режими гри
Co-operativeMultiplayerSingle player