By pressing the back of the electronic chameleon the sequence of four colors yellow, blue, green or red starts changing. Press it again to try to stop the color of your choice: it's blue? Bravo! You discard one of your blue chameleon cards (or joker) from Your hand. But beware! If you are not fast enough, it is the chameleon who himself chooses a color ... The first player who discards all of his cards wins the game.