"Graal" is a discard game that is played in four rounds.
In the first three rounds, players attempt to win quests by playing cards from their hand one at a time and using the powers of their Legendary card.
In order to play a card, it must match the color or symbol of the card in play. Some cards allow you to replay, make a player draw, block a player, etc.
The first player to run out of cards wins the round and the quest card in play.
At any time during the game, if a player plays the Grail card, he/she can win the game instantly, if he/she manages to play it as his/her last card.
If you get to the fourth round, the Tournament, then the players compete to the last survivor: the player who has no cards left in hand chooses the player to be eliminated and takes his deck, until only one is left.
-description from publisher