A fast paced hack-n-slash arcade game where kidneys are harvested from everyone in your path.
Every swipe of the sword and every thrust of your knife creates a complex series of responses from the complicated AI. Citizens will tell the police if they see you commit a crime and police will act on what information they provide. Gangs will leave the player alone if not messed with and attack the player or other gangs when stimulated. It gets deeper than this but past that is a secret.
Nearly everything in this game is procedural: the buildings, the sky, the ground, AI characteristics (including all physical features and mobility), gang spawns, ghosts, and a dynamic difficulty curve for police spawns.
The player is given a variety of weapons to choose from and purchase using kidneys in the shop. Both the fast attack and the power attack weapons can be swapped with multiple weapons available in each category.
You have the option to purchase different character perks when you get achievements. Some of which include: more starting health, longer slow-motion, faster speed, and many others.
As of version 2.0.0, you can unlock special abilities. There are four options: sending crows down from the sky to kill people, becoming enraged which increases speed and adds invulnerability, spawning in a sidekick which will go after people for you, and summoning a large eye to kill anything within range.