Co-op. Does it exist, and is it like the first game where one person can manage economy and bases, and the other can take control of the units produced and do the actual fighting? Halo Wars was a surprise hit for my wife and I when it came out. I wasn't expecting to enjoy it, but it quickly won me over, and the above nearly immediately became our de facto arrangement for playing through the campaign. If that's out of HW2, it'll drop off my radar entirely.