Square Enix is one of the biggest developers in the video game industry today, but they didn't become this popular overnight. Previously known as SquareSoft before their merge in 2003, the developer has created some of the most beloved game series ever made, with the likes of Final Fantasy and Kingdom Hearts now being household names. While they are most well known for their RPGs, they also aren't shy about covering dark themes in their large catalog of long-running games, with some of them exploring some very bleak concepts and ideas.