If you’re buying a Mature game, don’t bring younger siblings

[naznatips]

Famine said:

naznatips said:
twesterm is absolutely right. If the older person in question was his legal guardian then that's fine, but the cashier did their job. She was completely right to refuse sale to a kid who wasn't accompanied by his legal guardian.

I have never heard of a law that states in order to purchase alcohol, cigarettes, or in this case, a video game, then the adult has to be a legal guardian if they go to the store with a minor. What if it was an uncle or an aunt, would to same argument hold water?

I think the main problem was that he took those gift cards from the younger brother.

You can't buy alcohol in a store with a minor at all (cigarettes you can, as long as they don't suspect you to be buying them for a kid).  Your right, the main problem is that he took the cards from the brother, and that gave her the right to make the call that he was buying the game for him.  If a legal guardian had been given the gift cards by his son, then it would be a perfectly legal transaction and the cashier would have no right to make that call.