Every week, some kind of event is held at Super Smash Bros. Ultimate. Themed spirit board events and new spirits related to released games may also be added. It is also an online tournament with a unique theme. They usually occur on weekends.
Well, this is no exception. Nintendo has announced that “the spirit of bone-related shapes and designs has been scattered on the Super Smash Bros. Ultimate Spirit Board for three days starting Friday.” The official Nintendo UK vs. Twitter account tweeted the news, so I’ve included their tweets below.