Metal Gear Online (commonly abbreviated to MGO) is the online component of Metal Gear Solid 4. The game will feature 16-player online stealth battles, encouraging players to engage heavily in teamwork. MGO will initially distributed with MGS4 in the form of a starter pack, although it will eventually see a stand-alone release. The game will also be expanded through downloadable content via the PlayStation Network, potentially for up to 10 years.
The game was in beta testing in Japan from August 20 2007 to September 3 2007. Around 3,000 people joined the test sessions. US and Canadian customers who pre-ordered Metal Gear Solid 4 in April were also included in a further beta test which was due to begin on April 21 2008, however due to many technical difficulties including a server overload, it was postponed to April 25 2008 and continued until May 11 2008, promptly shutting down at midnight PST until its return on June 12 2008 for the world-wide release of MGS4. The beta package obtained from pre-ordering the game also includes a documentary DVD titled "Metal Gear Saga Vol. 2" with an "invite code" inside. On April 11 2008, Konami announced an open Metal Gear Online beta for Europe and that it would be available for download from April 26 2008 and would be entirely open to everyone who downloaded it until May 11 2008.
Metal Gear Online is region locked and you are only be able to play people in your own region.