Seriously they should've had an xmas event, GTA had one and clash of clans had one! They had a Halloween event (Festival of the Lost) and no one complained and that's supposed to be the day of the devil so why not and cams event?
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Actually it's co-opted in from the old Druidic feast night of Samhain, the church decided to do it to more easily convert what at the time was one of the world's largest religious blocs