I recently came across a site that hosts the files for games that have long had any publisher or developer support. Surprisingly most of Microsoft's early flight simulators are counted among them. The site is very good at only hosting games that are not offered on GOG or other digital platforms for sale. I didn't even know some of these games existed. A Microsoft WWII flight simulator with expansions? Total surprise. https://www.myabandonware.com/game/microsoft-combat-flight-simulator-3-battle-for-europe-bwe