LEGO® NINJAGO® World Builder lets ninja fans get creative as they immerse themselves in the fantasy world of NINJAGO. This 128-page hardcover activity book comes with 135 LEGO pieces, plus an Arin minifigure, so kids can create an incredible 4 in 1 model. They can build a ninja off-roader, then rebuild it into a motion dragon, a cool racing mech or a temple. A great gift for kids, this book includes 150 building ideas for creating NINJAGO models.