Prototype™Radical 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 worksPlaying now73−25 vs. yesterday7.6%of peakAll-time peak965May 2014