https://www.microsoft.com/products/game ... fault.aspx
So the last version is flight simulator x and there are still content packs being released by third parties. Photo realistic cities and stuff like that. My dad is really into it and has a whole HOTAS setup for it.
Right now he runs it on an old dell pentium 4 extreme running Windows XP. Some old ATI HD 4350 I think. Whatever was one of the best cards I could get him with Windows XP drivers and would work in a PCI slot. (AGP? I forget what that dimension xps with pentium EE has)
There are deeper discussions on dedicated forums about the best hardware and OS to use for this app. Surprisingly apparently Windows 10 does better than Windows 7 or vista for this. There is a strong community around this game.
I am throwing this info out there in case some ms flight sim fan runs into this and has a serious question regarding hardware for the game in 2018.