KingCell flips two FreeCell rules at once: build down regardless of suit, but only Kings may fill an empty column, turning every vacancy into precious real estate.

KingCell Solitaire is FreeCell with two rules turned on their heads. Instead of building the tableau down in alternating colors, you build down regardless of suit — any card can sit on a card one rank higher. That single change loosens the tableau considerably, since colors no longer box you in.
In exchange, the game tightens the one place FreeCell players love most: the empty column. Where classic FreeCell lets any card fill a gap, KingCell admits only Kings, so every vacancy you create is precious real estate reserved for the highest rank. Learning when to spend an empty column on a King and when to hold it open is the whole art of the game.
The four free cells work exactly as they do in FreeCell, each holding a single card as a temporary parking spot. Because every card is dealt face-up across eight columns, KingCell has no hidden information — every deal is fully solvable in theory, and any loss is a puzzle you could have cracked.
FreeCell and Baker's Solitaire are two solitaire games that are close relatives of this one.
The classic FreeCell sits right behind this one, same free cells, none of the King-only restriction.
If you run into anything odd or have an idea that would make the game better, please contact me.
Enjoy playing!
4 foundation piles: Build up in the same suit from Ace to King.
8 tableau piles: The whole deck is dealt out, giving the first four piles seven cards and the last four piles six. Build down regardless of suit. Every card is dealt face-up.
4 free cells: Each cell holds one card of any rank or suit as temporary storage.
There are four foundation piles, one per suit.
A card can be added to a foundation pile only if it's one rank higher and the same suit as the pile's current top card, starting with the Ace, so the only card that fits on a 5 of hearts is a 6 of hearts. There can be no more than 13 cards in a pile.
The top card of each foundation can be moved back into play if another pile will accept it.
Eight tableau piles hold the entire deck; the first four have seven cards and the rest have six. Every card is dealt face-up.
A card can be added to a tableau pile only if it's one rank lower than the pile's current top card, of any suit, so either a black 7 or a red 7 fits on an 8 of spades.
Only Kings may be placed on an empty tableau column. Any other card left with a vacant space must wait until a King fills it.
A single card is moved at a time. Longer ordered sequences are shifted by using the free cells and empty columns as stepping stones, so the number of cards you can move at once depends on how much open space you have.
There are four free cells, each empty at the start.
Any single card may be moved into a free cell, and the card resting there may later be played back onto the tableau or a foundation whenever it fits. Free cells hold cards regardless of rank or suit.