Flight Simulator is their oldest continuously updated product, but that may have changed due to their recent layoffs.  They shut down the wholly-owned studio that makes FlightSim, but they don’t go so far as to say they are ending the product’s life.  Microsoft’s spokeswoman Kelda Rericha:

We are committed to the Flight Simulator franchise, which has proven to be a successful PC-based game for the last 27 years

I used to love FlightSim when I was younger, but don’t have the time to play it now that I have real responsibilities.  I can’t imagine it’s a huge seller since most youngsters would find it quite boring compared to the video games available these days.

Did my disk just go up in value?