I did play it but I don't much like it after playing Halo on Xbox. On the PC version, Marines are dumber, hitboxes are screwy (biggest problem), Jackal ranks are indistinguishable, enemies do not throw grenades, and for some reason a Hunter cannot hit you with his gun if you're staying still. The graphics are kind of an eyesore too, but the gameplay issues above take priority. I do really enjoy CEA though, since it has none of those issues and looks great.