Action Cards can be played several ways. Depends on the way you want to play your game. In essence, they are to be played against other players for the most exciting play. You can also hold them to go out at the end of the hand (They have no point value). The 3rd way to play them is to discard them as a regular discard card that will end your turn. You will need to tell the other players which way you are playing it. Action cards must be read carefully as they play on the board exactly as you read it. When you are new to this game, you may want to read them secretly to yourself when they reside in your hands and decide how to play them when your turn comes.