This is an action game in which players assume the role of a detective (Takayuki Yagami) searching for a serial killer in the town of Kamurocho, Japan. From a third-person perspective, players explore the town, interact with characters, and engage in fights with human enemies (e.g., thugs, yakuza). Characters mostly punch and kick each other until opponents' life meters have drained; players can also use melee weapons (e.g., bats, bicycles, street signs) to inflict heavier damage. Some sequences depict slow-motion pummeling and enemies' deaths, accompanied by large blood-splatter effects. Cutscenes also depict intense acts of violence: a captive shot in the head; characters beaten until severely bloody; a man repeatedly shot by a crowd; A handful of missions/environments contain sexual themes and content: a man groping a woman's buttocks; a clerk (Men's Entertainment store) asking, “Are you ready to witness the honkiest hooter experience you've ever had…?”; one mission depicts a man with his buttocks fully exposed. During the course of the game, players' character can enter bars/restaurants and drink alcohol, which is rewarded in the form of experience points; players' character has an alcohol-tolerance gauge, resulting in impaired movement and/or access to drunken attacks. The words “f**k,” “sh*t,” and “a*shole” appear in the dialogue.