Xbox One and Xbox 360 owners, it’s time to pay attention to the Xbox Store for discounts. Xbox has announced their “biggest sale ever,” and they’re calling it “Countdown.”

The sale starts on December 22, 2015, and it’ll run for 17 days. According to the Xbox Wire, gamers can expect discounts on “hundreds of games, movies & TV shows and apps” through January 7.

While exact discounts haven’t been announced yet, the Xbox team points towards games like Halo 5: Guardians, Rise of the Tomb RaiderForza Motorsport 6Gears of War: Ultimate Edition and Rare Replay as being offered during the more than two week long sale.

How cheap will these products get? Deals will usually run between 40 to 60 percent off, and Xbox LIVE Gold members will get an extra 10 percent discount to boot. Some deals will exceed 60 percent, though we have no idea how many or which games.

The sale begins on December 22, 2015. What are you hoping to snag?