➀ Masahiro Sakurai has been publishing a series of videos on his YouTube channel discussing game development techniques and secrets for the past few years; ➁ In the final video of the series, he revealed that he has been working on a new game for over two years; ➂ The Smash Bros. creator mentioned that the videos were recorded between November 2021 and April 2022, and he started working on his next unannounced game after that.