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Set Up Your Unity Project

Create a new Unity project in the Unity Hub: Unity New Project
Madder is compatible with Unity 2019.4 LTS and newer.

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Install the Madder Starter Pack

Open the Unity Package Manager Window > Package Manager and add the Madder Starter Pack using the following git URL: 
https://github.com/maddergames/madder-starter-package.git
Madder requires the new Unity Input System to be installed, but you do not have to use it. For this tutorial, we will assume you are using the new Unity Input System. A popup will appear asking you to enable the backends for the Input System—click “Yes”. Your project will reload. Input System Popup