Collar X Malice is an otome visual novel adventure game exclusive to the Sony PlayStation Vita. Developed by Idea Factory under their Otomate brand, the game falls within the romance and interactive story genre, often featuring detective and mystery elements. Players assume the role of a female police officer who becomes entangled in a series of dangerous incidents when a poisonous collar is placed around her neck by an unknown assailant. Through narrative choices and character interactions, the player navigates complex relationships and unravels a dark conspiracy, with the potential to uncover romance along the way.