"And if a report on the gaming web site Angry Pixel is to be believed, the final game will support cross-platform play between the Xbox 360 and PC versions. Yep, we know - a PC version of Halo Wars hasn't even been announced yet. We'll let Angry Pixel explain:

"Halo Wars, touted as an Xbox 360 exclusive, is also apparently in development for the PC. But that's not all - apparently the game will also feature cross-platform play, a la UNO and Shadowrun, between gamers on the Microsoft console..."