Today marks the tenth anniversary of Xbox Live and Microsoft is celebrating the occasion by offering players a free XBLA game, as well as discounts on a range of titles.
Members can download Kinect XBLA game Wreckateer free of charge for the next 48 hours.
Meanwhile Battlefield 1943, Castle Crashers, Fruit Ninja Kinect, Geometry Wars Retro Evolved 2, Bastion, Peggle and Full House Poker are for a limited time available to download for half their regular price.
Marc Whitten, corporate VP of Xbox Live, wrote on Xbox.com: "I want to thank you for helping us make Live what it is today, and what it will be tomorrow.
"Over the past year an average of 9.4 million people a week using multi-player gaming on Xbox Live and in the 10 years of Live, nearly 14.5 billion Achievements have been unlocked worldwide, accumulating a total combined Gamerscore of more than 270 billion.
"So to all our 40+ million Live members in 41 countries around the globe, a very happy anniversary - we wouldn't be celebrating this milestone without you!"
In the US Microsoft has been marking Xbox Live's anniversary by sending out custom Xbox 360 consoles to a number of long-serving members.