Rojak Studio

Army of Two, commonly abbreviated as AoT or Ao2, is a video game developed by Electronic Arts, released on PlayStation 3 and Xbox 360 on March 4, 2008 in North America. Army of Two is a third person shooter game focusing on the fictional story of two private military contractors(characterized as mercenaries) "fight[ing] through war, political turmoil, and a conspiracy so vast it threatens the entire world" in a timeline spanning from 1993 to 2009.

Focusing on cooperative strategies, much like Gears of War, Army of Two's highlighting feature is the necessity to use coordinated teamwork to accomplish the game's goals. While the game is meant to be played with another human as your partner, a "Partner Artificial Intelligence"(PAI) is also included and programmed to follow the player's strategies in suit. Dependence on your partner(whether human or PAI) is so pronounced that certain objectives may be impossible to complete without it.

The main story is divided into several regions where the action takes place over the course of nearly two decades. The main focus of the story is the field of Private Military Contracting(PMC). While the game has been cut shorter, it does not alter any major events.

I've seen some of the game play, not bad.

Cons :
Available on PS3 and XBOX360 only
Only 2 player max.

trailers : http://www.gametrailers.com/game/2726.html