If you have difficulty running this on older versions of OS X, I recommend going to terminal, navigating to the
application and running it with the parameters -force-gfx-direct. Ex:

/Applications/An\ Amazing\ Wizard\ Demo.app -force-gfx-direct

[For permanently running it this way, navigate to the Mac OS subfolder of the Contents folder of the package, and duplicate the 'An Amazing Wizard Prologue'. Rename the original file as 'Amazing', (for example), then give the copy the original name. Open the copy, delete its contents, and have the following written as a shell script, and make it executable if necessary (i.e. chmod +x <filename>).

/Applications/An\ Amazing\ Wizard\ Demo.app/Contents/MacOS/Amazing -force-gfx-direct ]