Turns out these games served a greater purpose than entertainment! Fun read from Mental Floss:

The oldest of the four, Microsoft Solitaire, was first added to Windows 3.0 in 1990. Although the game (sometimes called “Patience”) has existed since the late 1700s, this digital version seemed to be demonstrating that in the future we would no longer require a physical deck to play simple card games. But that’s not what it was doing at all. Its real aim was far more modest: it was teaching mouse-fluency by stealth.

The intention was that Solitaire would get a generation of computer users still most familiar with a command-line input to teach themselves how to drag and drop, without realizing that’s what they were doing. The fact that we’re still dragging and dropping today suggests that it worked rather well.

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