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Just tell her it's magic, that way, you will not waste your time because it will be hard for oldies to understand it.. even the old heads in power have not understood it, lol

I would probably say Monopoly because I have a feeling they will keep asking what type of magic it is.

My grandparents have already passed away and they never even touched the internet. Nor to cell phones. So I have no choice but to explain that it is magic!!

I think grandma would love the magic part. 🤣

Tell her to listen to Matilda on The Interwebby at Talk Time with Tengo!

Failing that .... Magic ...

tell her its like a fair where you exchange your money for tickets or an arcade that you trade money for tokens. the tokes go & down in value and can be exchanged to play games or buy goods at the location.