Legacy was created with Inform and has IFID 2DD6CD7B-5AB7-4A29-8FD0-1020B2B3327C. To play a work like this one, you need an interpreter program: many are available, among them Zoom
for Mac OS X and for Unix; Windows Frotz or Windows Glulxe for Windows.
Or you can play without downloading anything by following the 'Play In-Browser'
on your web browser.