This list by definition excludes free and free-to-play games, which is why Candy Crush isn't even on the list.

As for others talking about games like Pac Man: yeah, they were probably the most popular games at the time but the number of total players probably pales because the audience has grown considerably over time. I guess there's a strong case for Windows Solitaire though that seems to have somewhat of an age limit as I'd expect there to be a drastic cut-off for younger generations, especially since macOS became mainstream.