Happy December! What’s so happy about it? Well, how about the new Xbox LIVE Arcade offer? From now through December 20, if you download the free Arcade Offer gamerpic, then purchase two eligible Xbox LIVE Arcade titles, your account will be gifted a bonus 400 Microsoft Points! That’s a sweet deal because the eligible games are all XBLA hits. Check out the full details on how to participate and get your arcade bonus on the Arcade Offer Page. This is the time to try out some of the games you might have been missing out on.