How to join the Killing Floor 3 closed beta

Killing Floor 3 is taking the co-op zombie survival shooter to a new level when it comes out, but you can get a taste of the action in the closed beta test.

​ Killing Floor 3 is taking the co-op zombie survival shooter to a new level when it comes out, but you can get a taste of the action in the closed beta test. Digital Trends

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