Sneaking Mission divides players among a red team, blue team, and one player as Snake. As the grizzled hero, the objective is to stun or hold up enemy soldiers and steal a set number of dog tags before the match ends.

The new map, entitled Midtown Maelstrom, is crafted in the middle eastern locale where Metal Gear Solid 4's single player campaign takes place and includes a variety of intertwining alleyways and passages. Midtown Maelstrom joins Blood Bath and Groznyj Grad as the third map available to players in the Metal Gear Online beta.

The beta went live last Friday in North America following a short delay. In light of the missed launch, Konami has extended the beta's operation by five days, setting a new closure date of May 11 for the test.

Access to the North American Metal Gear Online beta is available via a download code included in the Metal Gear Saga 2.0 DVD, a bonus disc given to gamers who preorder the upcoming Metal Gear Solid 4: Guns of the Patriots (PS3).