Xbox Store sale underway! Prepare your credit card

The Xbox Store's "biggest sale ever" is now underway; hopefully you got your Christmas shopping out of the way because there are some great bargains to be found.

The first week of deals runs from December 22nd until December 28th. Then more offers will run from December 29th until January 7th. And there are a number of daily deals to be had too.

Major Nelson listed the various deals that are available until December 28th. He will be tweeting about the daily deals as they go on sale.

There's 20% off Halo 5: Guardians, 33% off Rise of the Tomb Raider, and 17% off Rare Replay. There's also significant savings to be found on Grand Theft Auto V (40%), Titanfall (75%), and The Witcher 3: Wild Hunt (50%).

You can find the full list of discounted titles on Major Nelson's website.