In 'Who Said Hello?', you are a disillusioned private investigator in a bustling metropolis. While searching for a missing person in a city that never sleeps, you uncover a series of mysterious messages signed only with the phrase 'Hello.' Each encounter leads you deeper into a web of lies, secrets, and unexpected alliances. The game unfolds through dialogue choices and branching paths, where you must use your wits to discern friend from foe, find clues, and ultimately unveil the mastermind behind these cryptic greetings before it's too late.