Hansel et Gretel - La Revanche was created with Inform and has IFID DD479184-F5B6-40A9-8D56-88B9ACA4E44E. 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.