CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins88% CONFIDENCEOverall confidence: 88%How well the pin's source and references back up its dates.Weighted average of how firmly 5 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 betterSteam's store page lists 1 December 2015, Wikipedia[1] gives the same date for PC, PS4 and Xbox One after Ubisoft delayed it from 10 October, and PC Gamer's[5] December 2015 review lists the release date as 1 December 2015.
Ubisoft Montreal's tactical team shooter launched on 1 December 2015 for PC, PlayStation 4 and Xbox One at $60 and later went free-to-play with Siege X. It ranks 15th on Steam's most-played chart, peaking at 77,603 concurrent players in the week to 2 October 2026.
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