The Game Principle
The principle of Blanc-manger Coco is very simple:

At the beginning, each player receives 11 white cards. The first player (the 'Question Master') reads a blue card (fill-in-the-blank) from the draw pile. The other players choose a card from their stack and place it face down on the table. The 'Question Master' shuffles the white cards and then reads the blue card again with each white card. He selects the best one according to his own criteria.

How can you win?
After each round, all players ensure they have 11 white cards in their deck; if not, they draw new cards. The winner of the previous round keeps the blue card they won and draws a new card to read: they become the Question Master. The first player to have 5 (or 10 or 20 for the most daring) blue cards wins the game.

Cards with 2 or 3 holes
Some blue cards have 2 or 3 holes: Players must place 2 or 3 cards from their deck face down on the table. The bottom card is read first. The Question Master collects all the card stacks and reads the blue card again with each stack. He selects the best combination, and the winner receives a single point.

Number of Cards
The games of Blanc-manger Coco consist of 600 cards:

132 blue cards (with holes)
468 white cards - including 12 blank white cards to create your own cards.