Nano Assault (ナノアサルト) is a 3D shooter game released exclusively for the Nintendo 3DS in Japan. Developed by Shin'en Multimedia, the game takes the player through a microscopic world of viruses and bacteria, as they attempt to rid the world of a deadly virus. Players take control of a nanobot, utilizing a variety of weapons and special abilities to battle their way through the game's levels. The game's levels are rendered in 3D, giving the player the ability to move around in all directions, and rotate the camera to get a better view of the environment. The game also features a variety of power-ups and bonus items, which can be used to upgrade the nanobot's weapons and abilities. Additionally, the game features several different game modes, including a cooperative mode, which allows up to four players to join forces and battle together. Nano Assault is a fast-paced, action-packed game that offers a unique take on the shooter genre.