Metal Gear Solid: Portable Ops Plus is a standalone expansion for the PlayStation Portable, primarily emphasizing multiplayer gameplay. It features a single player mode called Infinity Mission, lacking a narrative but offering new missions and tutorials for novice players. Supporting up to six players via WiFi, it introduces characters such as Old Snake, Roy Campbell, and Raiden, continuing the series' tradition of capturing and recruiting allies.
A standalone expansion to Metal Gear Solid: Portable Ops, mainly focused on multiplayer. A single player mode called Infinity Mission was included, but has no story. There are also new missions and tutorials for beginners. With up to 6 players via WiFi, new characters including Old Snake from Metal Gear Solid 4, Roy Campbell, and Raiden from Metal Gear Solid 2, this game continues the trend of capturing and recruiting comrades.