Lego Island is a nonlinear game with a first-person perspective. The game features a series of missions including pizza delivery, jet ski racing, and putting the Brickster back in jail. It also features a variety of playable characters that each have unique abilities that can help the player throughout the game.

Pepper gets a call from a criminal in jail called the Brickster, thinking that he's a police officer. Pepper delivers the Pizza, which in turn lets the Brickster out of Jail. After the Brickster escapes, Pepper must go around the Island and get him back in before he disassembles the entire island.