Challenge

are recurring NaN Modes in.

There are 124 Challenges in split across eight categories; Smash, Adventure, Spirit Board, Spirits, Classic Mode, Games & More, Online, and Other. All Challenges initially appear as a silhouette and when highlighted the name of the Challenge and the requirements to complete the Challenge are shown. After completion, the subject of the silhouette is revealed and a reward is given. The Challenge can also be selected to reveal an image featuring the revealed subject. Of the 124 Challenges, 11 share their name with Fighters or give a -themed reward while a further 26 Challenges feature  content in the completed image.

Besides the NaN Scenarios that make up the main story, there are NaN Challenges in. These NaN Challenges yield NaN Materials after clearing them for the first time. and add NaN EX Vicious Monster Battles, a type of respawning HWAoC: where the chosen NaN Warriors face a certain HWAoC:. In NaN Divine Beast Battles, one of the four NaN Divine Beasts is piloted, instead of controlling a standard HWAoC:.