I've gotten it to compile with the normal 2018.1 build. About to start using it more than just in a toy scenario. You'll need to clone the repo listed above and checkout the develop branch. Inside the Unity project structure the project will have a Packages directory as usual. Inside you'll find the manifest.json file and a com.unity.inputsystem directory. Copy the com.unity.inputsystem directory and all of it's contents into your own project's Packages directory. Then add the following package reference to your dependencies section: "com.unity.inputsystem": "0.0.1" Optionally, if you wish to add to the testables section, just add: "com.unity.inputsystem" (no version string or additional key).