A simple little mod that lets you use Flood units in Skirmish. Currently a lot like Gamecheat13's mod he did on the original 360 version.
Little video of this in action. In my opinion, Flood units are pretty weak on their own, so you really have to build large armies to deal with the enemy. Guess that's just the Flood way, though.
Not sure why the sound didn't record in this one, but you can still see everything important, so it doesn't much matter to me.