Super Mario Maker 2 is a 2019 side-scrolling platform game and level creation system developed and published by Nintendo for the Nintendo Switch. It is the sequel to Super Mario Maker and was released worldwide on June 28, 2019. The gameplay is largely retained from that of its predecessor, in which players create their own custom courses using assets from various games across the Super Mario franchise and share them online. Super Mario Maker 2 introduces new features and course assets, including a single player story mode and new level assets based on Super Mario 3D World. Super Mario Maker 2 also features a new single player campaign known as Story Mode. The story follows Mario, Toadette, and several other Toads helping to rebuild Princess Peach's Castle, which had accidentally been reset by Undodog, a non-playable character. Players must traverse through over 100 Nintendo-created courses in order to collect enough coins to rebuild the castle. Non-player characters also offer players extra tasks and jobs throughout the mode. A Nintendo Switch Online subscription is required in order to access any online functionality in the game, including accessing player-created levels.