For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
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I actually really dislike this ocean theme i made, and the Mushroom theme is just the base and glowing mushrooms could be added (but I'm too lazy)
I'm really bored and editing a theme is definitely easier than creating one from scratch so here you go:
Hey, so I saw this yesterday and a Snow Biome theme took me 4 hours to make (and being kinda bored), but yeah I created a Snow theme. It may not be perfect, but It's always something.