The story of Easter Bunny's Big Day revolves around the Easter Bunny's quest to collect eggs by completing various minigames. The Easter Bunny is rewarded with an egg for each task completed, which he then brings to a school. With enough eggs collected, Robo-Rabbit assists him in delivering them, and the game ends with a congratulatory message.
The gameplay of Easter Bunny's Big Day features a collection of minigames such as jigsaw puzzles, memory matching, and egg catching. Players must complete each task to earn an egg, which is then brought to the school by Robo-Rabbit after it has been powered up.
Easter Bunny's Big Day was released on the PlayStation console in 2003.