In 'ChronoChum: Whose Hello Is It Anyway?', players take on the role of a time-challenged courier named Jax, who must deliver absurd messages across various historical timelines. As Jax, you'll face quirky characters from different eras, each with their outlandish demands and hilarious misunderstandings. Navigate through the wild west, ancient Rome, and a future where cats rule the world, all while piecing together clues from a mysterious present day glitch that threatens to unravel the fabric of time. Your ultimate goal? Complete the deliveries and discover who is causing the timeline ruckus, with choices that affect both your fate and the flow of history itself.