Every game has remastered graphics and other "enhancements" for modern hardware. You can play all of them as they were originally intended (including the old aspect ratio), but you can also experiment with features and modes that were never available on your Genesis or Mega Drive. You can play as Sonic, Tails or Knuckles in any of the games, and an "Anniversary Mode" brings in a widescreen ratio with infinite lives. You can earn medallions to unlock content by completing missions.
You can update your DualSense controller through Windows
The software requires Windows 10 or 11. You'll need to update multiple controllers one at a time. source