Metal Gear Online is a dedicated online title released with Metal Gear Solid 4: Guns of the Patriots, an exclusive title for PS3, which took the market by storm on its release in June. Featuring characters, weaponry and levels taken from and inspired by Metal Gear Solid 4, Metal Gear Online allows up to 16 people to play simultaneously. The online game retains the famed stealth combat gameplay of the Metal Gear series, players are dropped in a series of war zones wherein different challenges await.

The Race Mission mode pits two teams of Metal Gear Online players. The Blue Team has to search and protect the KEROTAN target, while the Red Team search and protects the GA-KO target. Each time a team passes a checkpoint with its target in hand, a new checkpoint will be generated. If a team drops its target and is not retrieved within a set period of time, the target's position will be reset and the checkpoint will change.

The Race Mission feature is scheduled to go live on May 12th, 2009.

The new Patriot feature will pick a few lucky players every week to become "Patriots." The selected players will get exclusive access to the "Patriot" 5.56mm Hand Rifle that has infinite ammunition with no reload. The player will have access to these unique Patriot features until the next ranking update.

The Patriot Feature is scheduled to go live on May 26th, 2009.