The gameplay involves guiding Pepper Roni around the island to locate the Constructopedia pages. Along the way, he'll interact with various characters who will help build structures that improve the island. The game also features several mini-games, including a pizza-throwing mechanic to stun enemy robots called Brickster-Bot.
Players can explore the island thoroughly to find hidden Lego character cards, which serve as rewards for their observations. With Pepper's agility and pizza-throwing skills, players must navigate through the island, defeating enemies and collecting pages to ultimately foil Brickster's plans and restore order to LEGO Island.