Grey goo, grey goo, it’s here for me and you! Devours our flesh, intestines its nest, it’s coming! It’s coming! No one’s safe, so turn and face our oncoming nanotech disaster.
By which I mean, obviously, that Petroglyph have bunged a fourth faction and new units into their RTS Grey Goo [official site] with a free expansion. The Shroud have arrived, and everyone’s cacking themselves. And hey, the whole game’s now cheaper too.