BoxBoy! + BoxGirl! is a puzzle platform game developed by HAL Laboratory and published by Nintendo. It is the fourth game in the BoxBoy! series and first to be released on the Nintendo Switch. It is a follow-up to Bye-Bye BoxBoy! released in 2017. BoxBoy! + BoxGirl! features a two-player multiplayer mode for the first time in the series, with it being praised by critics. The game was released worldwide for the Nintendo Switch exclusively via Nintendo eShop on April 26, 2019. Source: Wikipedia, "BoxBoy! BoxGirl!", available under the CC-BY-SA License.