We did just have the Luigi's Mansion 3 tie-in with Tetris 99, but here is another theme that has no relevance to any Nintendo game, it is the Scary Castle theme, which fits in very well with Halloween, even though this video does go up on the day after, but I do want to tie that theme in with the time of year.
I do like the appearance of the Scary Castle theme, as it has like a storybook-like appearance, and with the night sky in the background, as well as a haunted house, this isn't a bad theme, but I would put it up there in my favourites, as the Galaxy theme is still my favourite out of the Tetris 99 themes announced so far, wonder if Tetris 99 will get an update that will add even more themes to it.
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