Decks

Each deck is a stand-alone game set with its own difficulty level. The 3-symbol deck is the entry level — the 14-symbol deck is the master level.

Decks by number of symbols

Symbols per card

Cards per deck

Characteristic

3

7

Ideal entry level for beginners. Fast, easy-to-follow gameplay.

4

13

Slightly more complex, but still easy to follow.

5

21

Mid-level. Already demands significant attention; ideal for family play.

6

31

Advanced level. Special variant: the ‘6 and 9’ deck.

7

20 (47-symbol pool) or 19 (43-symbol pool)

Highly advanced. Truncated deck — a special mathematical construction.

8

57

Very difficult. Long, intense gameplay.

9

73

Extreme difficulty. For experienced players.

10

91

Maximum difficulty with the 10-symbol pool.

14

183

Master level. Marathon gameplay, for teams.
Differentiation details →

Practice decks

There is a special practice variant of the 3-symbol decks, which we designed for autistic children. The symbols are all the same size and are not rotated, and a straight line at the bottom of the card helps with orienting the card.

The practice deck is the best starting point for getting to know the system.

3_N card deck. 3 symbols per card, 7 cards per deck
The 7 cards of the 3_N deck, with 3 symbols per card

Suggested deck sets

Download the 3-symbol deck set (PDF, 102 decks)
The 4-symbol deck set on BoardGameGeek (PDF, 110 decks)
Monochrome blue card from one of the Pam Pam Pam decks — for colour-blind children and those with an intense colour preference
blue symbols only

Monochrome decks

These contain the symbols in a single colour — eliminating the colour variable. They are especially useful for two groups: colour-blind children, and autistic children who have an intense colour preference.

The monochrome deck turns the favourite colour into a resource.

The ‘6 and 9’ deck

A special variant of the 6-symbol decks: it contains exclusively 6 and 9 values — one of the most difficult decks in the system, because the two numerals must be continuously distinguished. The base point (Poka-yoke marking) is especially important here.

Multiple representations within one deck

Within a single deck, the same value may appear as regularly or irregularly arranged dots, fingers, an Arabic numeral, a Roman numeral, tally marks, a partial numeral, a numeral split into two parts, a mirrored numeral, a chess piece value, the number of animal legs, the number of polygon sides, the proton number of a chemical element, in the binary number system, in Morse code, in Braille, or as the result of an addition or subtraction.

It is the value that must be identical — not the representation mode. This increases the challenge and strengthens abstract understanding of number concepts.

Which one is yours?

Rules → The full system →

Browse the decks

Each deck has its own post with card images and a download link. In the deck code, the number shows how many symbols there are on a card, and the letter indicates the deck variant: each letter stands for a different deck (e.g. 6_D: 6-symbol deck, variant D).