Killing Floor: IncursionTripwire InteractiveReleased 14 Nov 2017·App 690810Steam user reviewsMixed49.9%· 1.1K reviewsRecent Mixed · 50%SteamPeaks Rating47.4 MixedRecent 30 days —How it worksLast seen1Sampled 32 minutes ago · not a live figure—of peakAll-time peak74 Oct 2026