"Shortly after learning that the Flood would be making an appearance in Halo Wars, we were whisked away to a meeting with Ensemble's Graeme Divine where we immediately asked: "Is the Flood a playable race?" As quickly as we asked it, we were answered: no. With an emphasis on the story-driven single-player campaign, Divine told us that the multiplayer component would only include the UNSC and Covenant forces, as already revealed, and the campaign would only be playable as the UNSC, not the Cove..."