In 'Whose Diary is it, Anyway?', players take on the role of an aspiring but slightly inept private investigator named Casey. While attending a quirky house party, Casey accidentally stumbles into a room filled with personal diaries. Each diary belongs to one of the unconventional party guests, who each have their own secrets and bizarre tales to tell. Your task is to unravel the mystery of the stolen diary, unearth the identities behind the secrets, and ultimately confront the culprit. Along the way, make choices that influence the quirky narrative, engage in humor-filled dialogues, and solve absurd challenges while trying to maintain your sanity in a house full of eccentric characters. Will you be able to piece together who’s diary it is and reveal the ultimate truth?