1. The 'BioShock' Franchise
The first game in the BioShock franchise follows Jack, who discovers the underwater city of Rapture after his plane crashes near its entrance in 1960. Originally, Rapture was meant to be an exclusive utopia. Sadly, its inhabitants became addicted to ADAM, an injectable genetic material that granted them short-term superpowers (imagine if Adderall, Speed, and Professor X's DNA had a baby). They slowly lost their humanity, and their perfect society deteriorated. Jack, one of the few human characters in Rapture, struggles to escape as he fights off a variety of ultra creepy baddies.

The second game in the franchise, BioShock 2, takes place in Rapture from the perspective of a Big Daddy, or a mutant altered with ADAM. The third game, BioShock Infinite, switches it up and takes place in 1912 in the floating city of Columbia.

The franchise's intriguing backstory is what makes it so addictive, but it's not for the faint of heart. In the first two games, you're hunted by Joker-like ADAM addicts who take serious pleasure out of terrifying you before they attack. The dark and dingy surroundings (you are under water after all) and ornate decor of the once upscale world don't help.