シノビマスター 閃乱カグラ NEW LINK is an all-star battle game that takes place in a ninja martial arts tournament. The story revolves around four different schools: National Hanzo Academy, Hebijo Clandestine Girls' Academy, Gessen Girls' Academy, and Homura's Crimson Squad. Each school receives an invitation to participate in the tournament, and the girls gather in a skyscraper to fight.

The game allows players to choose their favorite girls from the different schools and create a team of five to compete in the tournament. The objective of the game is to become the strongest ninja team and earn the title of Shinobi Master. The battles are fought in a new link battle system, where players can easily activate ninja skills and connect them from one girl to another to defeat their enemies. The game also offers customization options with a wide variety of costumes, accessories, and hairstyles.

Overall, シノビマスター 閃乱カグラ NEW LINK is an exciting game that offers a unique battle system and customization options. The game is free to play and recommended for iOS 11.0 or later, iPhone 6s, iPad Air2, and iPad mini4.