Whose Hellos Are These, Anyway?

You're a mildly eccentric postman in a quirky town where every doorstep is a portal to a unique dimension. Each letter you deliver contains a greeting from a parallel universe whose inhabitants have wildly different customs. You must decipher their hellos and solve absurd challenges using the letters while balancing your life as a regular postman. Uncover the mystery behind an increasingly peculiar pattern of greetings and the disruption it's causing to reality itself, while navigating humor-laden encounters with the townsfolk, the multiverse's bizarre creatures, and your own chaotic life.