In 'Who Said Hello?', players take on the role of a washed-up stand-up comedian named Riley who stumbles upon a bizarre world where every greeting is a clue to an overarching mystery. After receiving a mysterious letter urging them to uncover the truth behind a series of strange 'hellos' that have caused chaos in their hometown, Riley must venture through various quirky scenarios, interact with eccentric characters, and piece together whimsical yet dramatic clues. Each choice affects the storyline's path, drawing players into a blend of humor, drama, and mystery as they navigate misunderstandings, mishaps, and unexpected friendships on their quest to find out who really said hello.