It’s a mass murder simulator with retro pixel graphics, which if you’re not already sold on the concept alone, just take a good look at the actual gameplay.
You’re let loose in a given environment, and told to kill everyone. How you do it is completely up to you - you can just rely on skulking around and slicing people up with your trusty knife, or you could start playing with the environment and interact-able objects.
This is where the real fun begins.
You can set traps, poison food, burn people with a bbq, run them over with a car or even impale them on the horns of a charging bull. Stealth and strategy play a major role as one wrong move and it’s game over.
If someone sees you go for the kill, or they find a body, the police will come and attempt to take you away. Think of it as Hotline Miami meets Hitman, and you're almost there.