Microsoft Solitaire Collection offers FIVE of the best Solitaire card games for free in one app - Klondike Solitaire, Spider Solitaire, Free-Cell Solitaire, Tri Peaks Solitaire, and Pyramid Solitaire! Microsoft Solitaire Collection is played by more than 240 MILLION people and has remained one of the most popular card games in the world for over 25 years! Klondike solitaire.