In 'Whose Hello?', players take on the role of a witty, sardonic detective visiting a peculiar annual carnival in a town consumed by secrets. Each booth reveals a new character, each stranger concealing a piece of a larger puzzle. Players must interact with eccentric carnival workers, decipher strange riddles, and uncover hidden motives to solve the ultimate mystery of who is behind a series of bizarre happenings that began with a single, enigmatic greeting - a simple 'Hello'. Choices made will affect not only the story's outcome but also the psychological state of the town itself, transforming the carnival from a festive outing to a web of intrigue and deception.