From the Amigo rules:
The players collect cards by winning tricks, and these cards are sorted in a special way. The players divide cards into piles by color during the course of the game, and only the point value of the topmost card in each pile counts at the end of the round. The goal of the game is to score as many points as possible.
A note about game play: The deck includes five suits, but players don't need to follow suit during play. Instead suits are important because you have five scoring opportunities each round. The game lasts as many rounds as there are players.
(The English name of this game would be "Null & Void.")