While there's certainly been no shortage of zombie games in the past two decades or so, there's still nothing quite like State of Decay on the market. The game was quietly but steadily successful and garnered a loyal fan base over the years by delivering something unique. As you can easily guess from its title, State of Decay 2 is the sequel to the zombie apocalypse simulator made by Undead Labs and released as an Xbox Live Arcade title for the Xbox 360 in 2013, before landing on PC as well.