If you haven't played Bioshock 1 yet, you've at least heard of the underwater metropolis of Rapture, or the famous "would you kindly?" line. There's a reason you have. This is one of the greats, and while the gameplay is a little simplistic compared to later entries, the atmosphere and setting are unparalleled to this day.

100% Completion Notes: You really have to stay on top of the many playthrough-long achievements in this list. Maxing out research tracks, upgrading weapons, and of course, the incredible audiologs that tell the true story of Rapture. I would highly recommend using a guide for this one!