I hope this doesn't count as advertisement for Raptr, but they're handing out thousands (?) of free copies of Joe Danger 2 for XBL later today (the page simply says available "soon" right now). They did a similar thing with the Minecraft XBL release (that's how I got my copy).
The catch? Well, you have to be a Raptr member, link your account to a Facebook account, and also have one out of a few selected games already played.
Here's the page with full details, and I thought I'd just get the word out there for those interested. Free games are always appreciated in my book.