At launch, installing Microsoft Flight Simulator could take up 170GB on a hard drive, but Kotaku notes on the most recent patch mention that optimizations have cut it down to merely 83GB.
That’s probably welcome news to anyone with a bandwidth cap they’re trying not to go over or who wants to squeeze the game onto an SSD for better performance. It’s unclear what they did to save space, but we have to assume that deleting that 212-story tower in Australia was worth a few hundred megabytes.
It’s also a good sign for the upcoming Xbox Series X/S port, assuming you’d like to install it on your console without uninstalling every other game you’re playing.