itch.io

As long as you cloned grabbed the sample project from git (link below) you should be able to get started. Our adding process is manual at the moment, so we should get you added to the SDK shortly. 
https://github.com/geniesinc/ExperienceSDKSampleProject 

Feel free to put a link to your itch.io there so you can complete the signup. 

Since our SDK is Unity based, Unity will be required.