Mass Effect 2

Two years after Commander Shepard repelled invading Reapers bent on the destruction of organic life, a mysterious new enemy has emerged. 
On the fringes of known space, something is silently abducting entire human colonies. 
Now Shepard must work with Cerberus, a ruthless organization devoted to human survival at any cost, to stop the most terrifying threat mankind has ever faced. 
To even attempt this perilous mission, Shepard must assemble the galaxy's most elite team and command the most powerful ship ever built. Even then, they say it would be suicide. 
Commander Shepard intends to prove them wrong. Players will prepare for a suicide mission to save humanity, choosing between 19 different weapon classes to do it, including devastating heavy weapons that can end a battle in seconds Having recruited a team of the galaxy's most dangerous operatives, you'll need to train and equip them to survive insurmountable odds. 
As with the first game, you can explore the galaxy- scan planets to uncover unique secret missions. 
Also similar to the first game is the chance to control your conversation with physical moments of intense action