Dark Descent Stages

Dark Descent (Jp: 闇討ち Yamiuchi Sneak Attack) are a group of special stages appear in specific times.

List of Levels

 * Dark Descent I
 * Dark Descent II
 * Dark Descent III
 * Dark Descent ∞

Japanese Version

 * September 10th, 2015 to September 18th, 2015.