In 'Whose Hello?', players immerse themselves in an eclectic city of talking animals, where they assume the role of Wally, a brilliant yet eccentric detective hamster. After receiving a mysterious letter containing just a greeting and a clue, Wally must navigate through various quirky neighborhoods, each ruled by a different animal gang, to uncover the secret behind the abrupt disappearance of the city's beloved Mayor Pufftail. Players must gather clues, solve eccentric puzzles, and engage in hilarious banter with anthropomorphic characters, leading to a shocking twist in this comedic mystery that thrives on dialogue and player choices.