I had a random thought/curiosity that's not very original, but wanted to post it here in hopes someone might send me a good reference. Or just humor me with feedback.

The general thought is the merits of a deck consisting of 60 cards such that the deck could be divided evenly by 2,3,4,5 or 6.

What I mean by that is consider a standard deck of playing cards. There's 4 suites of 13 denominations. The deck could also be divided by color (ie: red or black). I suppose one could also say the deck could be divided by face cards and non-face cards, but it's not an even division. So a standard deck of 52 cards can evenly be divided 2 or 4 ways.

So I had this thought, wouldn't a deck of 60 cards be much more flexible? By which it could be divided evenly into 3, 4 or 5 unique groups. Without being theme specific, I was thinking of how one might design such a deck.

Consider this: Take 3 standard decks of cards and remove the A,2,3,4,5 from each deck. For cards coming from deck #1, put a circle around the denomination, for cards coming from deck #2, put a square around the denomination, and for cards coming from deck #3, put a triangle around the denomination. Now combine the cards. You should have a deck of 60 cards that can be divided as such:

30 red / 30 black

20 circles / 20 squares / 20 triangles

15 hearts / 15 diamonds / 15 spades / 15 clubs

12 A's / 12 1's / 12 2's / 12 3's / 12 4's / 12 5's

They could even be subdivided such that you have:

6 red A's / 6 red 1's / ...

10 red circles / 10 red squares / ...

OK, big deal huh? I know that's not very exciting. But now I'm thinking how this might add a new dimension to games involving a trump suite. Instead of thinking of the 4 basic trump suites, one could say "circles" are trump, thereby possibly changing the dynamics for that round. When circles are trump, the other suites immediately become squares and triangles and each suite now has 20 cards instead of 15. Likewise, if 2's were trump, then there would be 5 unique suites of 12 cards each for that hand.

My thoughts weren't for a particular kind of card game, but rather the generic appeal such a deck might have. A single deck of cards/tiles that could be used for 3 suited, 4 suited, or 5 suited games and the ability to mix match (ie: cross suite playing) and still have a balanced deck.

The novelty goes beyond a card deck. It was the number 60 that I liked. Seems a while back when I was playing with various weighted dice mechanics, 10, 12, 15, and 20 were common values. I was thinking that a card deck with 60 cards might merge well with some dice mechanics. Thereby the option of using dice to further introduce a balanced random chance into a card game. I don't know. Just toying with the idea.

---edit---

For example: Take a 12 sided die and mark the sides as:

{1,2,3,4,5, heart,diamond,spade,club, circle,square,triangle}

Rolling that single die could randomly decide a suite to be:

number (implies 5 suites of 12 cards)

symbol (implies 4 suites of 15 cards)

shape (implies 3 suites of 20 cards)