GDevelop video 2 - adding assets to the game
GDevelop has a great asset store. The quality of the assets does vary, so note the following when you're choosing your own assets.
For your main character, make sure they have all the basic animations. A non-animated playable character doesn't look or fell good.
It looks best if all of your assets have the same art style. For this reason it's best to choose one asset pack and stick to it.