Free Solitaire - FreeSolitaire.com
There are hundreds of versions of Solitaire but on FreeSolitaire.com you can play the most popular variant: Klondike Solitaire. This game has been played for centuries but only became known to the general public when Microsoft started supplying the game with their Windows operating system. Solitaire was first included in Windows 3.0 that was released in 1990. Because Solitaire is included on every version of the world's largest operating system, the game is installed on more than 1 billion devices, making it the most popular game ever made. On this website you can play it completely free and online and if you are one of the few people who does not know the game, here are the rules:

Solitaire Rules

1 pack of cards is distributed over the playing field, without the jokers. If you look at the game you will see 7 columns of playing cards at the bottom, which we call the tableau. Only the top cards are open and are therefore visible. The cards that are not divided, go to the stock pile, which you see at the top left. In the top right are 4 empty boxes, the basic columns, all cards will be placed here eventually, in order from Ace to King and in the same color, this is the main goal of the game. You can do this by sorting the cards on the tableau, where you only can arrange them by alternating color, from high to low. For example, if you see a black 5 and a red 4, you can place this red 4 on this black 5 to unlock a new card. You first look for the aces since these are the first cards you need for the basic columns, then you look for the two, three and so on. If there are no more options on the tableau, you start with the stock pile. Enjoy!