The extent of the Christmas truces across trenches of the Great War in 1914 is still up for debate, but British and German soldiers kicking footballs all across no man's land is now as much a part of Christmas Lore as The Happy Fat Chappy and the three gifts of Terry's All Gold, Frankenstein, and Grrr. Trench warfare FPS Verdun [official site] is celebrating the truce itself again this year, with a special map where chaps from both sides can lark about together, throwing and kicking balls of snow and leather. Observe:
Warms the very cockles of your heart, doesn't it? The map lets folks play footie, throw snowballs, and generally lark about without all the shootybangs. This year, they've also added the option to send (e-mail) postcards from the trenches, which also enters folks into a raffle for extra copies of the game.
Verdun is 40% off in the Steam sale, down to £10.19.
If you're more an MMOer than a face-shooter, Cobbo has a big ole list of events those sorts are running. I could not tell you how many times he checked it.