My all-time personal favorite co-op game remains Rainbow Six: Vegas 2. If you're like me, you've been waiting for a "Six fix" for a while now. Luckily Gameloft has just the prescription to keep you distracted until Ubi comes through, and it's in the form of a portable first-person shooter fast-roping onto the iPhone App Store on March 17th.
It isn't enough that the below trailer makes Tom Clancy's Rainbow Six: Shadow Vanguard look like a lot of on-the-go fun; the game also supports three-player online co-op. Lick your thumbs and get ready to breach - the bad guys have had plenty of time to prepare. Rainbow Six is in the building.