As long as there has been Microsoft Windows, there has been the card game Solitaire. I always heard that Microsoft provided the game of Solitaire (aka: Klondike) with the operating system, not only a means to provide entertainment, but also as a means to teach people how to use the mouse.
World of Solitaire started out as an experiment by author Robert Schultz and has grown into over 350,000 players per month. I have found World of Solitaire to be at the same level or better than any of the Solitaire game software that you would install on your PC. Again, World of Solitaire is played in your web browser and requires no installation. Just visit World of Solitaire [ HERE ] to select and start your game. As a tip, after arriving at the World of Solitaire site and starting your game, hit “F11” on your keyboard to toggle to full screen mode. You can turn full screen “off”, by hitting “F11” again.
If you find yourself becoming addicted to the World of Solitaire, I encourage you to also visit Robert Schultz’s – Blog about “World of Solitaire” to keep abreast of any updates.