In previous articles I've covered the three most played solitaire card games in the world, namely Klondike, Spider, and FreeCell. Others require real skill to play well, and can involve strategic placement and careful card counting. Some are very casual games that can be played in a very relaxed frame of mind, and can come down to blind luck of the draw and mechanical play. But the average person often doesn't realize that there's a rich diversity within the family of solitaire games. Most people identify 'solitaire' with Klondike, which is easily the most popular and familiar solitaire card game. Popular Adding and Pairing Solitaire Card Games