FreeCell Solitaire is different from other solitaires because of the four free cells in the top left of the playing field. You can move cards to and from the free cells at any time, but you can't stack cards there.
About Flag Day FreeCell Solitaire
Celebrate Flag Day with this patriotic version of FreeCell Solitaire. It's the same FreeCell Solitaire you love to play year-round, but with updated visuals to celebrate the ol' red, white and blue.