The Chaotic Workshop Mod kit provides an SDK to code and create your own Items and Levels for the use in Chaotic Workshop. The game uses the Farseer Physics Library to create a physics sandbox.
Get Started today with the Sample Project over on GitHub! Head over to the Documentation if you want to dive into the deeper elements of the SDK and the Vertices Engine.
Check out a quick video of a sample mod in action over on Youtube here!
You can read the Wiki here to get started. As well with this sample, the monogame framework and a multitude of examples for Farseer online such as it's own test bed, it's incredibly easy to get started today creating your own custom physics sandbox today!
You'll need a copy of Chaotic Workshop to use the SDK. You can download it from Steam below: