This is a paid asset, but now you can download Easy mobile input | 10 Joystick images 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
Easy mobile input 10 Joystick images v2.1
Flexible input system with inclusion of the 10 beautiful joystick images which can be used with and without the system. Can help you easily create your mobile input solution.
Features:
– Flexible input system included
– Easy to configure and extend
– Well written
– 10 different joysticks
– 1024 x 1024 pixel image
– 19 icons for Buttons and Horizontal/Vertical joysticks
– The source vector file (.psd) is included. If you need a different resolution or want to make any changes to them
– White and black option for some joysticks