Within the link provided in the "Download Link", you should recieve a zipped folder containing the packaged Unreal project.
1. Extract or Unzip the project into a folder of your choice.
2. Once you have fully unzipped or extracted the contents, navigate to "WindowsNoEditor"
3. Run "Repair.exe"
Be sure that you use Unreal 4.21.2.
Have fun and hope you enjoy the game! ^^
For the source and executable alone, please refer to the following links: