An Infinite Pain was created with Inform and has IFID 3D28C748-49D7-455A-A5DE-CE280A1153E1. To play a work like this one, you need an interpreter program: many are available, among them Gargoyle
for Mac OS X or Windows; Windows Frotz or Windows Glulxe for Windows.
Or you can play without downloading anything by following the 'Play In-Browser'
on your web browser.