This is basically my idea on what could possibly be the next Bioshock. Seeing as we've had a city under the ocean (Rapture) and a city inthe sky (Columbia) where could the next one be? maybe...the moon? set in the future rather than the past? anything's possible with where the series could go. this is just my idea. Which means this is simply a fan-made idea. Do not take this seriously. I simply thought I'd put my ideas somewhere and see what you think.