The Mercury messaging toolkit is a new way to handle cross-component communication in the Unity game engine. It integrates seamlessly with the Unity Editor, and is both robust and expandable. It has been tested in Unity 2020 up until 2020.3.21f1, Unity 2019 up until 2019.2.17f1, Unity 2018 up until 2018.3.13f1, Unity 2017 up until 2017.4f1, and 5.6. The toolkit contains the Mercury messaging framework, which is a messaging and organizational framework built around the Mercury Protocol. Unity...