https://en.wikipedia.org/wiki/Microsoft_Flight_Simulator_(20...

Edit: I have this feeling that Microsoft's marketing normally oversells their games. In this case the game has been developed by an outside team:

https://en.wikipedia.org/wiki/Asobo_Studio

Said team "only" has 140 employees, and they've been busy with releasing other major games every year so far.

I'd be cautious.

Edit: Revenue per employee is 50k EUR per employee. That is kinda low. To be fair, I compared 2014 revenue numbers with 2018 employee count numbers.