Coloretto is a card game designed by Michael Schacht, originally published in 2003. The game cards depict chameleons, showing that "a player may change his color many times during the game". Rules are provided in both English and French. The published game is designed for 3-5 players, but rules for a two player version of the game are available at the Rio Grande Games website.
Players collect cards in order to score points. There are seven colors of cards in Coloretto, together with three wild cards, or jokers, that can be matched with any color of a player's choice. The important factor in Coloretto is that only three colors contribute positively towards a player's score, while any remaining colors count against their score. The three colors are chosen individually by each player (e.g. player 1 can score positively for green, yellow, and blue cards, while player 2 scores positively for brown, green, and pink).
There are also a number of "+2" cards which score 2 points independently of the colored cards.
Each player initially receives a card of a color, with no two players receiving the same color. The remaining cards are shuffled together, and a "last round" card is then placed fifteen cards from the bottom of the shuffled stack. There are a number of (initially empty) card rows equal to the number of players in the game. Coloretto provides "row markers" to easily track the rows, and to remind players who has taken a row (see below).
A player's turn consists of performing one of the following actions:
Once a player takes a row of cards, he or she is finished for that round and places the cards taken into his or her play area so that all other players can see them (adding them to other cards already in possession). The remaining players continue drawing/placing cards, subject to the "three-card" limit above, or taking rows themselves, until every player has taken a row of cards in that round. The player who took the last row begins the following round, with empty rows again at the start of the new round.
When the "last round" card has been drawn, play continues to the conclusion of that round, after which scoring is performed to determine a winner.
Each "+2" card is worth 2 points.
The player with the highest total wins the game.