If you want to host your own version of the show for a classroom or party, several free and paid templates mimic the 1st Edition's look and feel: Who Wants to be a Millionaire - PowerPoint Quiz Template
The original 1st Edition PC game, released around 1999–2000, is now considered "abandonware" as it is no longer officially distributed by the original publishers. You can find it through the following channels: Download Who Wants to Be a Millionaire - 1st Ed...
Note : Older versions may require compatibility settings to run on Windows 10 or 11. If you want to host your own version