Tetris is a very good choice, both because of its ready availability, and the skills developed.
You manipulate shapes. Mathematic functioning, doing geometry more and more rapidly.

The speed needed to control the shapes also develops hand/eye coordination, builds synapses in the brain and central nervous system, has been shown to re-train damaged tissue and regain functions after stroke or injury to the brain. And you can get it for free, just download it.

Mah jong because you match tiles, with chinese writing on them usually, it is a timed game so you work faster to get more points, recognizing the shapes of the words.

Shisen-sho is a Japanese variation of that.

And again, with both, you have to work on hand eye coordination.,

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