Yoku's Island Express is an open world/metroidvania-style pinball adventure game that seamlessly blends platform navigation with pinball mechanics. Players follow Yoku, a dung beetle, as he arrives on Mokumana Island to take on the role of the new postman. However, the island is in turmoil as the ancient island God is trapped in a restless sleep, causing quakes and storms.

In this unique and quirky adventure, players will enjoy handcrafted visuals while soaring through the air, vacuuming explosive snails, fighting creatures like the Screetch, feeding starving lemurs, uncovering the mystery of the Fruit Altar, and aiding Yoku in rebuilding the island post-office.