http://majornelson.com/2014/01/31/xbox-live-gold-members-get-dead-island-and-toy-soldiers-cold-war-free-in-february/
Dead Island Feb 1
Toy Soldiers: Cold War Feb 16
Discuss!
Honestly, Microsoft is doing a very poor job with giving free games right now, but that's to be expected. They launched this right before the new consoles came out. I expect to see better games over the year since they're just getting started.
[url=http://en.wikipedia.org/wiki/List_of_Instant_Game_Collection_games_(North_America)]Edit: Here's the history of PS+, and it's not glorious at all. They started with some games that no one wanted or everyone had played too, and they only offered one a month.[/url]