CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins79% CONFIDENCEOverall confidence: 79%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better90/100
Wikipedia[1][3][5][6] lists 23 June 2000 in North America (Australia 27 July, UK 4 August); Game Developer's Deus Ex postmortem and TechRadar's[2] 20th anniversary piece (both opened) contain the date.Ion Storm's Deus Ex, directed by Warren Spector, was released for Windows in North America on 23 June 2000 and published by Eidos Interactive.
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