Left 4 Dead 2ValveReleased 16 Nov 2009·App 550Steam user reviewsOverwhelmingly Positive97.5%· 1.1M reviewsRecent Overwhelmingly Positive · 97%SteamPeaks Rating97.5 Overwhelmingly positiveRecent 30 days 96.5How it works ›Playing now30,386−4,263 vs. yesterday19%of peakAll-time peak161,590Dec 2013