That's a lot of Zombies

Up to 100,000 zombies at once, and they all want your roof.

Man the guns

Hose the crowd with the 25 mm and save the 105 for the thickest part. There are seven big guns to pick from, napalm included.

Keep them off the roof

The dead stack up every wall of the building to get at your squad. Knocking a pile down means shooting right next to your own guys.

Your squad fights back. Give them snipers, a machine gun team and claymores.

Rig the streets

Before each night you lay out sentry guns, flamers, mortars, a tank cannon and a drone swarm on the map. They fight on their own while you're busy somewhere else.

Call in the big stuff

You can call in A-10 gun runs, B-52 bomb lines, a laser from orbit and a B-2 that bombs every pile around your roof. Bring three a night.

Get through fourteen nights

Fourteen nights in places like a frozen dam, a rail yard and a stadium full of the dead. Each one sends more of them.

Lose a night and you still get paid. Upgrade and go again. After the last night they keep coming.

There's also a Daily Challenge and a Last Stand where no helicopter comes.

Kill enough and you earn a nuke. It goes off as your squad flies out.