Thanks so much.
We used and extended an asset pack.
I'm glad you liked the interface. I have a background in user experience and user interface design so wanted to make it nice and easy to understand.
Viewing post in Dice Dungeon jam comments
Sure thing, happy to help out and give suggestions and feedback on UI stuff.
As for resources around UX/UI design, I recommend looking at user experience design principles such as Neilsen's usability heuristics. This website has a good overview of the design principles. Interface design is tied to creating a good user experience, so knowledge of both is a good idea.