Unusual shaped cards see Ergomia at www.ergomia.com
There are 5 colors and 5 symbols (Cirkle System) on the cards and the rulebook includes both new and also many known game adaptions like UNO, poker etc.
e.g. version "Flower"
Object of the game is to form flower with the cards scoring the most points.
Player plays the card in front of him but to play the card next to another card it must have the same color or same symbol. If the flower forms rounds the last card must be placed in the middle of the flower and should be in the common shape or color on each side.