Walkthrough Fly-mode

Well I created a basic terrain for a game I am creating, and I want to create a preview mode. How can I make a not so much playable, but rather a tour-able mode that I can send to my colleagues so they can "fly" around the map and look at it without downloading Unity itself and opening the file.

Build an Executable (Web or standalone sounds like it would be best for this project).

Then add the Flight controls to your camera (See this Answers post for enabling that)