Booster Packs were a subtheme of Ninjago released in 2012. They were an inexpensive way to add defenses, weapons, and minifigures to your Ninjago Spinners collection. Each Booster Pack retailed for $4.99 US, with the exception of Kendo Jay, which was a promotional item with LEGO’s Shop at Home website. They were packaged in foil, each having a small, clear window to see some of the parts included.
Aside from the Kendo Jay promotional, each set contained a single Minifigure, as well as three Minifigure weapons, three defenses for the base of a spinner, and a height addition piece. A set of game cards also was included.
Kendo Jay’s Booster Pack was packaged like a polybag, and included extra weapons, and an extra spinner crown.