This is a paid asset, but now you can download 40 Sweet Buttons 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
40 Sweet Buttons v1.0
Incredible! There are fourty sweet, shiny buttons for your project only for $1.98!
[NEW] Now the pack includes HOVER effects for each button!
[WARNING] The price will be changed soon. It’s just discount for the first customers 🙂
At the moment you can buy one button for less than $0,05
Perfect for RPG and strategy.
Package includes PSD, PNG (and hover for each button!)
p.s. Recommended to use last version of Photoshop to open the sources.