In 'Hello, Who?', players step into the shoes of an unassuming phone technician named Sam, who gets embroiled in a bizarre mystery when they accidentally receive a series of enigmatic voicemail messages from an elusive, possibly mythical creature claiming to be their long-lost sibling. As players unravel the absurd clues left in the voicemails, they must interact with a colorful cast of quirky characters, navigate through whimsical locations like a retro tech museum, and decipher the eccentric creature's riddles—all while trying to figure out who (or what) is behind the mysteriously escalating situations. The game mixes humor with genuine mystery, allowing players to make choices that will impact the outcome of their strange family reunion, making for a uniquely entertaining experience.