Promotional game by Flunch, a reastaurant chain in France.
It play like War in that you challenge each other in a turn and the most powerful card 'captures' the enemy card. There is a difference here in that a special die is also used. Every time you reveal a card, you roll a die and the value of the die rolled is added to the value on the card. So you can never be sure of a victory in any challenge.
The winner is the player who wins all the cards.