Right click on it, click open, then it will have an option to run it! Also, move the file into the application (or a non-desktop folder), otherwise you'll get stuck in the tutorial and never be able to advance to another level.
Thank you Manekoware. The Unarchiver worked for me to extract but now I'm getting an error that says that apple can't verify the developer. Is there a solution to this? Thank you!
