Purchase two qualifying Xbox LIVE Arcade titles between December 1, 2010 12:01 AM EST and December 20, 2010 11:59 PM EST, and receive 400 Microsoft Points - as a BONUS! Limit one (1) gift per person. To qualify for this offer, you must: (a) FIRST register by downloading the Arcade Offer Gamer Picture, and then (b) purchase the content from Xbox LIVE Marketplace using your Xbox LIVE account, by December 20, 2010 11:59 pm EST. Visit http://www.xbox.com/arcadeoffer
for full terms and conditions.