Once you defeat all eight Robot Masters, Dr. Wily appears in the Wily Capsule and flies into the Gear Fortress, where the final four stages await.
Like with the Wily Castles from previous games, the Gear Fortress has its own map screen, but by selecting the Mega Man box in the bottom left corner you can return to the normal Stage Select if you want to replay any of the original eight stages. You can also visit Dr. Light’s Lab at any time, or return to the Gear Fortress by selecting the Dr. Wily logo that now appears in the Stage Select screen.
