Games like Zombie Army 4: Dead War - Left 4 Dead Character Pack 2

If you finished Zombie Army 4: Dead War - Left 4 Dead Character Pack 2, the closest matches are Hrot, F.E.A.R. 2: Project Origin, The Darkness, Ghost in the Shell: Stand Alone Complex and Quantum Error. All 9 share its shooter genre and are ranked by how closely their themes and modes overlap.