Extreme: Shinobi Picture Scrolls

The is a collectable card game depicting several historical shinobi. It is very popular amongst civilian and shinobi children alike so much so that some stores limit each customer to only three purchases.

During his trip to Konohagakure, Tentō Madoka insisted on purchasing an entire store when told that he was limited to only three purchases. Boruto Uzumaki is shown to collect and add them to an album for safe keeping. Tentō also keeps his cards in an album and has bought so many that he has duplicates.

Trivia

 * Each card pack apparently costs 30 ryō.