Borderlands has been a real co-op juggernaut. It's one of our forum users' most beloved titles, and it's easy to see why. A great shooter with super-customizable RPG elements, all set in a gorgeously rendered world, with split-screen and online co-op... ah, yeah, that's what we're talking about. For Xbox Live Gold users, Borderlands is even better this week, as all three DLC packs are available for the low price of 400 points, AKA 5 bucks. That's half off, just like Mad Moxxi's clothes in the pic above. (Way to tie it in, eh?) So, if you're a Borderlands fan who likes to stretch the value of your gaming dollar, it looks like this is your week. Maybe with the savings we can all pitch in and buy Moxxi a t-shirt...