Mass Effect 3 is an action role-playing video game developed by BioWare and published by Electronic Arts for Microsoft Windows,Xbox 360, PlayStation 3, and Wii U. Officially announced on December 11, 2010, the game was released March 6, 2012 and marks the final chapter in the Mass Effect trilogy of video games, completing the story of Commander Shepard. A Wii U version was announced during Nintendo's conference at E3 2012.
(From Wikipedia)
The combat system in Mass Effect 3 has been changed and refined. In particular, the cover system has been improved, there are more options for moving around the battlefield and scoring instant melee kills, more conventional grenades are available and an improved artificial intelligence is introduced. A four player multiplayer co-op mode is also available in game.