Daylight's End was created with Inform and has IFID 4EAFF4D6-0AE3-4098-9A28-30615DE2AE94. 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'
link, using the Quixe interpreter. You'll need to have Javascript enabled
on your web browser.