Yes it is, potentially. Where I live (and grew up) the only game played with these type of cards is Poker, and we didn't exactly play Poker growing up - so all

Yes it is, potentially. Where I live (and grew up) the only game played with these type of cards is Poker, and we didn't exactly play Poker growing up - so all our local games use a different deck of card. And in other not-too-distant regions they use yet another deck or two. This might be the "worldwide standard" but that doesn't mean anything.