Wreckateer is now free as part of Xbox Live's 10th anniversary celebrations. The Kinect-enabled demolition-fest won't is going for nada and niente for 48 hours, Microsoft tells us.

While they aren't free, several other XBLA games are going half-price. Those with costs lopped in half include Castle Crashers (now down to 600 MSP), Bastion (600 MSP), Peggle (400 MSP), Full House Poker (400 MSP), Fruit Ninja Kinect (400 MSP), and Xbox Live staple Geometry Wars: Retro Evolved (200 MSP). Those games stay half-off until November 22.

If you've only got eyes for Gold, Xbox's Major Nelson has got you covered there too. He's giving away 1-year subscriptions to Xbox Live Gold on Twitter today, with instructions on how to have a chance of nabbing one here. Meanwhile, we're celebrating by breaking out the Party hats and red-ringed doughnuts. Happy birthday, Xbox Live!