2013 was a good year to be a gamer. Some of the year's titles, like "BioShock Infinite" and "Proteus," pushed the boundaries of video game design. Others, like "The Last of Us" and "Grand Theft Auto V," took time-honored game conventions and perfected them. And some, like "Tomb Raider" and "Assassin's Creed IV: Black Flag," were just tons of fun to play. Here are the top 10 games of the year.