Call of Duty:Mercenary

Call of Duty:Mercenary is a first person shooter made by Treyarch.It is set in an open world that spans the whole earth.

Campaign
The campaign is a free roam mode that lets you explore and do contracts,which are missions you finish for a reward.The contracts are randomly generated.You start in a safe house that has a bedroom,a kitchen/dining room and an armoury where you can get unlocked guns for free.

Multiplayer
Multiplayer is similar to black ops 2 where there are core and party game modes.A new feature is that you can make your own multiplayer character.

Zombies
There are three Zombies maps,

SkyBase 2

Slaughterhouse

Hunted