Killing Floor 2 is free to play on Steam this weekend, and 33% off

Killing Floor 2 can be played for free this weekend on Steam and it's also on sale.

If you decide you like the shooter, you can purchase it for 33% off.

This means you will pay $20.09 for the Early Access title instead of the regular $29.99.

The sale and the free weekend ends on December 14 when Steam updates.