I visit with my mother in a home and most of the time they're just sitting there so I bring my tablet and she loves it, so I figured if I had some games on it, it might keep her occupied during the visit. Thank you for your concern, I really appreciate it.

I don't know of any computer games but I have an app on my phone called BrainHQ (by Posit Science).
Once a day, every day I get a short memory game on my phone. (free) Sometimes it's easy sometimes it's harder. I hope this helps in some way.
There is also a pay version available for $13.99 a month or $94.99 a year.
I only do the free version.