Ro-Ghoul features a wide variety of objects and environments to discover. Players are given the choice to play as a member of one of two factions: a Ghoul, or a member of CCG. The object of the game depends on the player's faction. No matter which faction the player belongs to, they must gain strength and complete quests to increase their Reputation.
Currency is collected for each point of reputation, which can be used to purchase cosmetic items (such as Masks). Players can also choose to fight each other, hang out with friends, organize competitions, or fight bosses to gain even more experience!
As a Ghoul, players can either live peacefully or engage in genocide. However, they are always in fear of being hunted and killed by other ghouls, or humans that are trained to kill ghouls. Ghouls utilize their Kagunes to fight and defend themselves. Ghouls can gain reputation and be classified as a higher threat by the CCG and become a notorious Ghoul.
As a member of CCG, players risk their lives to protect people from the human-like monsters who eat human flesh. Armed with Quinques, CCG Investigators work perilously to defend humanity from Ghouls. Investigators can gain reputation and rise through the ranks to be a top investigator of the CCG.