So many RPGs have buildings and shops you pretty much have to enter to find out what they are. In the real medieval and modern world signs are used to solve that problem. These signs are simple, images, so:
This is a paid asset, but now you can download for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Simple Medieval Signs v1.0
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1) they can be used for various purposes
2) they make sense for a semi-literate society
3) they can be recognized by the player at a distance
Each sign is 512x512. There are 16 signs, and 1 plain wood texture.