Another heavyweight franchise whose original title is now over 10 years old, Bioshock distinguished itself from so many other titles at the same for being a great combination of RPG and FPS gameplay mechanics that were supported by one of the most unique storylines and settings in gaming.
The original game takes place in the 1960s and puts you in the shoes of a plane crash survivor who, by apparent sheer luck, finds a lighthouse and gains access to a secret underwater city known as Rapture. The city is the product of utopian visionary and businessman Andrew Ryan, who is also isolated from the surface. By the time you arrive, the whole city is anything but utopian, with the remaining survivors tearing each other apart.
Bioshock's story is complemented by an art design and visual approach that resemble 1960s architecture, style, and technology in such a memorable way as to make its imagery easily recognizable even a decade later.