Brandon Sanderson has always been outspoken about his favorite video games, and has spoken very fondly about the long-awaited indie sequel, Hollow Knight: Silksong, since its unexpected release earlier this year. Many Sanderson fans would guess that Silksong is easily his favorite sequel to release this year, but his Halloween costume selection suggests otherwise.
In their annual Sanderson family Halloween episode on YouTube, Brandon Sanderson, his wife Emily, and his son all dressed up as characters from one of Sanderson's favorite sequel releases of 2025, Once Upon A KATAMARI. Sanderson said he could have described their costumes as being from "a highly anticipated sequel to a favorite game" to make fans think it was Silksong.
Sanderson and family showed up to their annual Halloween episode dressed as the "Queen and King of All Cosmere," a play on the KATAMARI characters, the King and Queen of All Cosmos—with their son as the Prince, of course. The costumes are dedicated to the newly released KATAMARI game, Once Upon A KATAMARI, which launched on October 23, 2025.
Sanderson fans had been speculating over the past week or so leading up to Halloween over what exactly the Sandersons would dress up as this...
