As many of you are already aware, Microsoft is holding a pretty crazy sale this year. Now, we could just throw them all into a list with no further details or without assuring that the sales are accurate and then leave you to remember what day the deal you wanted was on, but that's not how we roll here at TrueAchievements.Instead of presenting the sales that way, we're going to do as we always do and list all the sale items with download links in the sale prices. We'll also be covering each day's sales as they go live, so be sure to check back here between December 18th and December 31st for full lists of each day's sales. We'll also be sure to link you back to this post each time so you don't have to go searching around for anything.See how much we look out for you guys?On to the sales that will be running throughout the holiday season:Xbox LIVE Arcade:A World of Keflings 800 MSP 400 MSPFire Pro Wrestling 800 MSP 400 MSPFrogger: Hyper Arcade Edition 800 MSP 400 MSPJet Set Radio 800 MSP 400 MSPJoe Danger 2: The Movie 1200 MSP 400 MSPKinect Party - FREE until December 31stPeggle 800 MSP 400 MSPPlants vs. Zombies 1200 MSP 600 MSPRealms of Ancient War 1200 MSP 400 MSPSonic 4: Episode II 1200 MSP 600 MSPSonic The Hedgehog 2 400 MSP 160 MSPSuper Meat Boy 1200 MSP 600 MSPThe Simpsons Arcade 800 MSP 600 MSPWreckateer 800 MSP 200 MSPZuma's Revenge! 800 MSP 400 MSPDLC:A World of Keflings-"Sugar, Spice, and Not So Nice" 320 MSP 160 MSP-"It Came From Outer Space" 320 MSP 160 MSPPeggle"Peggle Nights" 400 MSP 200 MSPAvatar Items:Abominable Snowman Outfit (Female) 160 MSP 80 MSPAbominable Snowman Outfit (Male) 160 MSP 80 MSPAir Force Flight Helmet 160 MSP 80 MSPArmy Humvee 240 MSP 120 MSPGolden Retriever 240 MSP 120 MSPHusky 240 MSP 120 MSPSports Car 320 MSP 160 MSPT-Rex 160 MSP 80 MSPTriceratops 160 MSP 80 MSPGames on Demand (Prices vary per region):Bully: Scholarship Edition - download hereRock Band 3 - download hereThese sales will run from December 18th-December 31st.