Solitaire and Minesweeper were actually there to help users get used to using a mouse (Minesweeper was about click and Solitaire was about drag-and-drop). They

Solitaire and Minesweeper were actually there to help users get used to using a mouse (Minesweeper was about click and Solitaire was about drag-and-drop). They became dedicated time-wasters later, but they did actually serve a purpose at one time.