According to the Steam page for Call of Duty: Ghosts, there will be a Double XP for Ghosts from Feb 21st through Feb 24th. Steam is also having a 50% off weekend for Ghosts on PC for the weekend to celebrate the Double XP.
The Double XP is most likely for all platforms, but we’ll keep you posted once they do announce it..
SOURCE: Steam via CoDSPulp
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