Cod is a fast paced game and has way many features than halo except the vehicles in multiplayer. We cant sit ,run ,or even lie down in halo. In the multiplayer ,everyone goes into the "small and flying ball mode" and it gets boring. The guns are more real and better in cod. We can even fly in the new cod: advanced warfare which is similar to halo.We can even go invisible in cod: black ops 2 which is again same as halo. The zombie modes in cod are epic.