From official press release:
PLAYSTATION(R)3 Computer Entertainment System Exclusive UNCHARTED 2: Among Thieves(TM) Expands Gameplay by Introducing Online Multiplayer Features to Franchise
Featuring Five-Versus-Five Player Matches Competitively, and Up To Three Player Cooperative Modes; Franchise Adds Hours of Replayability
SANTA MONICA, Calif., April 27 /PRNewswire/ - Sony Computer Entertainment America today announced that UNCHARTED 2: Among Thieves, exclusively for the PLAYSTATION®3 (PS3) system, will introduce online competitive and cooperative multiplayer modes to the franchise. Developed by premier PS3 software developer Naughty Dog Inc., UNCHARTED 2: Among Thieves, the highly-anticipated follow up to UNCHARTED: Drake's Fortune, will feature up to 10 players in 5-versus-5 competitive gameplay. Cooperative multiplayer modes allow up-to-3 players to progress through a variety of environments by working together to accomplish set objectives. Utilizing a robust party system, groups of players will remain together in ranked and custom matches while earning currency, which used in combination with currency earned in single player missions, will unlock additional content and upgrades.