"Infinity Mission" is the new single player campaign (a Sony e-mail misprinted Infinity War as the name of the entire game). Just like the original Portable Ops, players will be able to recruit new comrades and gain new weapons through the single player campaign. Additional multiplayer modes, such as Shooting Range and Training Mode, will ll test the skills of each player. In addition, Portable Ops+ will use the save data from the original game so that you can continue with the squad you had originally created.
Additional online maps in Plus include an updated version of the original Metal Gear Solid's REX Hangar. Additional characters, like Raiden and Old Snake, are also hidden in the game. Stay tuned for more.
Gallery: Metal Gear Solid: Portable Ops Plus