What is "boxboy!"

is a puzzle platformer video game developed by HAL Laboratory and published by Nintendo for the Nintendo 3DS. The game was released on the Nintendo eShop in Japan on January 14, 2015, and in North America and Europe on April 2, 2015. A sequel, BoxBoxBoy!, was released in Japan on January 6, 2016 and in North America and Europe on June 30, 2016.