Focusing on fast vector techniques in Photoshop you will create a unique looking style for a 2d platform running game. Skills you must have already:

Basic drawing ability
Basic experience with Photoshop
Basic understanding of Unity
The vector techniques covered are simple and effective to give maximum impact in a short amount of time. Using Photoshop smart objects is a key concept of the course a technique commonly used by professional game artists.

Split into two sections first you get familiar with the vector tools and thumbnail process. Then we jump into a mini project called the Golden Antelope inspired by Indonesian folklore. You'll see the whole process take shape from thumbnails to finished image.

More info - https://www.udemy.com/2d-background-design-for-games-vector-techniques/