PrototypeRadical Entertainment·ActivisionReleased 10 Jun 2009·App 10150Steam user reviewsVery Positive80.5%· 14.3K reviewsRecent Very Positive · 81%SteamPeaks Rating79.4 PositiveRecent 30 days 74.1How it worksLast seen95Sampled 2 hours ago · not a live figure—of peakAll-time peak965