Call of Duty: Ghosts - EXTINCTION

Call of Duty: Ghosts gets its own horde mode courtesy of Extinction. Up to four players get to lug around digging equipment while skulking aliens swipe at their ankles. As is usual, kills generate currency to buy gun emplacements and other lethal gadgets. As popular as Treyarch's Nazi Zombies is, I've never felt like it held a candle to Modern Warfare 2's Spec Ops suite, so it's a shame to see this reskin replace it. The popularity of these zombie modes baffle me. I get that they help drive DLC sales (like that should mean anything to me), but I've always found them aimless time sinks. There's something about the deliberately obtuse metagame, and lack of win condition that just rubs me up the wrong way.