Bioshock
Dishonored is an Immersive Sim series of stealth action games. With a fantasy steampunk setting. They are incredibly well made and intricately designed.
Bioshock
Bioshock has a unique collapsed, underwater city, steampunk setting, a good twist and fun gameplay. It as all round a well made game with some Immersive Sim elements and great atmosphere.
Bioshock Infinite
Infinite was the sequel to Bioshock that Bioshock 2 should have been. Another unique setting with another plot with a great twist. This time we have a steampunk, racist, floating city as the setting.