The Humble Killing Floor Bundle just launched on Thursday, August 13th and will be live through Thursday, Septemeber 3rd, 2020.
Tripwire Interactive have opened the Killing Floor for your perusal! Get games and additional items like Killing Floor, Killing Floor 2 & the Digital Deluxe Upgrade, and Killing Floor Incursion.
Choose one of 3 tiers; the more you pay, the more Steam keys you get:
TIER 1: Pay $1 or more to get Killing Floor + 5 DLC Packs
TIER 2: Beat the average price to also receive Killing Floor 2 + 9 DLC Packs
EDIT: Killing Floor Bundle Mid-Promo Addition DLC added to the second tier
TIER 3: The final tier costing $11 gets you all the games in the first 2 tiers plus Killing Floor Incursion (VR Only) plus tons of characters and other DLC goodies
All games are delivered as Steam keys. Normally, the total cost for the games in this bundle is as much as $324.