Games but helps understand what works. Learning a new hobby is particularly helpful.
Some card games that could be helpful include
Cribbage
Blink (from the makers of Uno)
Snap
Set (don't know who makes it)
Hearts/Spades/Euchre
You'll notice that all of these games involve multiple people. Responding to other people and predicting what they will do really works the mind. Computers are great but can't replace the benefits of talking and socializing