Join Mario and his friends for Princess Peach’s birthday in this hardcover picture book based on The Super Mario Galaxy Movie—in theaters April 1, 2026! Mario and everyone in the Mushroom Kingdom are ready to celebrate Princess Peach’s birthday, but events take an unexpected turn with the arrival of a mysterious visitor. Children and Mario fans of all ages will love this full-color hardcover picture book based on The Super Mario Galaxy Movie—in theaters April 1, 2026!