Bioshock

The first two Bioshock games take place in the underwater city of Rapture.

Rapture is an underwater city made by man to be a kind of safe haven for the free. This city is similar to America in that it started as a great idea, but eventually was overcome with a lack of will-power.

This city was free of religious or ethnic oppression. However, soon the population became too dependent upon a certain drug that gave them superhuman abilities.

Bioshock Infinite was a little different from the first two in many ways. First, Bioshock Infinite takes place in 1912 rather than the 1960's. As well as this, the game takes place in the city of Columbia. Columbia is a sky city ruled by the Catholic religion, completely different from the free city of Rapture shown in the first two games.

I recommend that you play these or at least watch a playthrough of them. They are all such great games and hope you all enjoy them!