Halo's multiplayer formula has always been a magical one. The two-weapon limit and near-flawless balance of guns, grenades, and melee attacks underpin the whole thing, but it's the unique vehicles combined with an arsenal of weapons that each have their purpose and place that make Halo one of the world's best multiplayer destinations. Halo 4 breathed fresh life into the veteran series by adding an upgrade system, loadouts, and, yes, perks. Are these borrowed from Call of Duty? Sure, but they're all applied with a deft Halo touch, ensuring that Halo 4 multiplayer still feels like Halo. Add in a solid collection of maps--something Reach forgot about--along with the series' continued unparalleled social and matchmaking options, and Halo 4 is the game we can't stop playing each night.