Assassins Creed II is one of the most popular video games of all time and one of the best selling video games of all time. This updated and enhanced version of the classic game features a completely new story, world, and characters. Players can choose to play as either Altair or Ezio, two of the most famous and well-known Assassins in history. As Altair, players must travel through the ancient city of Constantinople to find the Holy Grail, while Ezio must track down the Assassins and stop them from achieving their goals.