Returning the series back to boots on the ground combat in both the campaign and multiplayer. (nerdbite.com)
This will return a series of letters and numbers, so copy and paste this ID into HTC's form. (android.gadgethacks.com)
We feel the campaign hasn't aged as well as the classic multiplayer, but it is still a fantastic experience overall that is well worth playing for returning series vets as well as new fans. (lifewire.com)