The atmosphere mixed with the eclectic group of characters you stumble upon makes Rapture a place I didn't want to leave.
Uncovering the story of the downfall of rapture through audio tapes is riveting and the twists and turns along the way are great. Gameplay has aged well considering Bioshock originally released in 2007, with engaging combat and exploration with a slew of satisfying plasmids to try out.

I'm sure I'll be thinking about rapture long after I have left.