Card Rules: Four ================= .. index:: Four Card 1. Players must always keep a four. This will be enforced by the Three Sevens rule. See :ref:`Seven`; 2. Fours may be played on a Jack; 3. Fours cannot cause a Four of a Kind or Six of a Kind event as described in :ref:`General Rules`. Fours cannot be discarded on their own. 4. If 12 Fours are played in a row, the player who places the final Four immediately "gets out" (see :ref:`Ending The Game`) and their face up and face down cards should be discarded into the play pile irrespective of their value.