2D Platform Builder is an asset that makes designing platforming games really simple and easy. You have just do some clicks to create a platform then select the textures to be used, and the tool will all the rest!
You can easily edit platforms by inserting and manipulating points where you want. Also, it has an align point feature to make straight platforms.
So, make it quick and test yourself to see how easy it is to make a platformer game!
Video Tutorial : https://www.youtube.com/watch?v=tuzUKpAWgkE
and the document is included !