One game I enjoyed around the Xbox 360 was the highly entertaining and liberal to play 1 vs. 100. It was fun by sitting, answer some random questions, earn achievements and perchance get called high on stage to win some true to life prizes, also it was cost-free. The game went away 3-4 months back but, another free multiplayer type game influences works.
Full House Poker currently is in the beta phase over in Australia, and has now gotten the rating of G, though it at some point had a T rating due to gambling aspect of the game. Because it's website exactly the beta, were a tad away from getting the actual game to experience but the indisputable fact that it's being beta tested is an effective thing.
I'm not much of a huge poker fan but I will play several hands, this also is one game I fully thinking about playing if it drops, which I would estimate are typically in 2011.