Platformer Essentials is an asset that will be made available on the Unity Asset Store. Each element within this demo has been hand-made and contains multiple variations. While this playable demo only shows the visual aspects there will be various videos and tutorials made showcasing all the tools that were specifically made to create and deploy platforms and various other game elements efficiently.

Alternate link to the asset: https://github.com/Mrchrissross/Platform-Essentials-2D