Where are the project files for the Video Tutorials?

Hello everyone;
I have been going through some of the Video tutorials in the ‘Learn’ section.
Well done, but in several instances project example files are used that seem to be expected to be downloaded for the course, but there is no where to download any of these files.

For example, I am going through ‘Constructing Believable Environments’ where several example levels are demonstrated, and the instructor believes that you have these files too to continue with the lesson.

They are of course not absolutely essential to learn from the videos, but it would be nice to have the files to work with.
Does anyone know where these might be found?

Thanks for your time.