Dunno if it's any good, but free is free. It will be free for a limited time so look for it Wed. http://xbox360.ign.com/articles/788/788097p1.html
You can think of the free title as a way to give people that didnt get in the beta somethign else to do.
Thanks for the info, Im there! Hope the achievments for it are cool. Just those alone will have me playing the crap out of it
I think its awesome that Microsoft would offer a free game, but why make it US only. I downloaded it before I came to work today. I hope its good, but if I can get the Halo Beta when I get home, it may be a long time before I find out -LOL.