The game is packed in a can.
Content:
57 stones in different colors,
9 cards with 4 rings at it

In the basic game with 2 players one gets 18 red, the other 18 green stones.
The cards have to be laid in a square.

Alternately each player sets a stone onto a ring of one of the square cards. The valuation starts after 3 stones:
One point for 4 stones on one card, or 4 stones in 4 rings side by side, a.s.o

When all stones are laid, the game is over.

There are also 4 cooperative versions.