What happened Microsoft. Remember those glorious days of Halo: CE and Halo: Custom Edition. What about Halo 2. And then all of a sudden you move the whole franchise to Xbox 360 to sell the console. C'mon guys. Computer gamers loved Halo. I say you partner with Steam and port over all existing Halo games after Halo 3 for PC and Mac. Now THAT would be amazing.