A 2D sidescrolling action game developed by Inti Creates under direction by Yoshihisa Tsuda, designer of Mega Man Zero 2 and 3, for the Nintendo 3DS eShop.
UpdateOn March 11 2015, an update to the game was released adding the following features:New Nintendo 3DS: ZL and ZR will be used to switch weaponsNew Nintendo 3DS: loading times will be improvedSeveral new songs will be added for regular missions, the ending, and Boss Rush
