What are the best video games released in the year 2012?

One weakness of most stealth games is that it's almost always better to play nonlethally. In Dishonored, choosing the nonlethal option on an assassination target is often a fate worse than death. For instance, one woman can be delivered to her secret stalker, the overseer of the anti-magic church can be branded as a heretic and punished by the church, and a pair of brothers can be sent to slave in the mines they once owned.