Here's a quick take on a Christmas game for your Windows Phone.
Save Dat Santa is a "three card monte" style game for your Windows Phone that has you finding all the hidden ornaments before the exploding ornament in Santa's lap explodes. The ornaments are hidden at the bottom of the screen inside wrapped gift boxes. As the game gets underway, you are shown which box the ornament is hidden under and then the boxes are shuffled about. Once you choose a box, they get shuffled around again.
You have to find the ornament twenty-five times before the fuse burns out and Santa gets blowed up. The further along the game you progress, the gift boxes shuffle faster. It's a simple game, mildly entertaining, has a nice Christmas tune playing in the background and will test of your powers of concentration. It's not a bad game but after you play Save Dat Santa two or three times, it gets a little old. While the gift wrapping changes on the boxes from game to game, Save Dat Santa needs just a little more to keep you hooked.
The up side to all this is that Save Dat Santa is a free game so you're only out the few seconds it takes to install. It is a mango app and you can grab it here at the Windows Phone Marketplace.