I remember being a kid, turning on my mom's computer, playing Solitaire was basically the only entertaining thing to do (this was pre-internet times). Such numbers are just astounding, but given how every Windows machine has shipped with Microsoft Solitaire pre-installed, it starts to make sense. That's the equivalent of 38.194 games of Solitaire being played every minute or every single person on earth playing a hand of Solitaire roughly twice a day, making Solitaire one of the most, if not the most, played video-game of all time. More than 20 billion (that's with a 'b' and not and 'm') games of Solitaire are played each year through Microsoft's Solitaire Collection, making Solitaire the most played video game of all time.
More than thirty years after its initial conception, Microsoft Solitaire is alive and well.