It is the most popular solitaire game all over the world. Solitaire is a patience game, and also goes by names such as Klondike Solitaire, Classic Solitaire, Traditional Solitaire or simply Solitaire. Welcome to Solitaire Online, also known as Klondike Solitaire or Classic Solitaire! This is the most popular version of solitaire online, and so needs no further introduction. Important Shortcut Keys Toggle Fullscreen: