Lego Knights' Kingdom is an action-adventure video game released for the Game Boy Advance in 2004. Set in the medieval Lego universe, players embark on a quest with the main character, Sir Jayko, to prevent the evil Lord Vladek from taking over the Kingdom. As players progress, they unlock and play as different knights from the Knights' Kingdom series, each with unique abilities, across various levels featuring puzzles and combat challenges. The game is based on the Lego toy series of the same name.