Solitaire has been part of Windows for more than 25 years, and the Microsoft Solitaire Collection makes it the best experience to date with five different card games in one: Klondike This version is the timeless classic that many people just call 'Solitaire. Simple rules and straightforward gameplay make it easy to pick up for everyone. Solitaire remains the most played computer game of all time, and for good reason. Check out the new look and feel of Microsoft Solitaire Collection on Windows 10.