If you subscribe to Xbox LIVE Gold, you'll be able to take a whack at Bethesda's The Elder Scrolls Online: Tamriel Unlimited for free this weekend.
The promotion comes as part of Microsoft's Free Plays scheme and will take place on Thursday, December 10 at 9am Pacific Time, ceasing on Sunday, December 13 at 11:59pm. If you do take part, you'll be able to sign up for the "Million Reasons to Play Contest" Bethesda recently set up, offering one lucky player $1,000,000.
A discount on the game will join the promotion so, if you do enjoy the game, you'll be able to pick it up at a lower price. The game recently saw the release of its second expansion, Orsinium, which takes players to the homeland of the Orcs to help rebuild their ancestral home.