From the Vault — originally published February 3, 2010. Some links, videos or prices may be out of date.
Playing as Big Daddies and also the appearance of Big Sisters are certainly confirmed with this trailer. Though extremely late to the party I am currently playing through the original Bioshock and it just clicked with me a few days ago. I should have that finished up in time to play this new game in the series when its released next week.
