a new rule for the next round. If a player has only one card left, they must say "Bartok" or receive a penalty. This applies even if a player gets down to one card by non-standard means, such as trading hands with someone else. If the draw pile runs out before a round ends, all but the top card of the discard pile is flipped over to form the new draw pile. The game usually ends when several rules combine to make continued play impossible. The game has no overall winner or ending condition, only a series of winners of each round. Creating new rules New rules are introduced to Bartok by the winner of each round, making the game more complex as it progresses. The creator must tell the other players what this rule is. Rules cannot be specific to particular players (such as "skip Bill every turn") and cannot remove or alter a rule introduced in a previous round, unless that is the wish of every player. Additionally, if there is a unanimous veto, that is, every player bar the creator vetoes a new rule, then the rule is not used and the creator must think of another. Commonly, there is a time out rule, whereby if players need clarification during a round of a newly introduced rule, they may call time out and discuss it. Almost all rules are of the form "if (trigger) then (consequence)", for example "If a 7 is played, reverse the direction of play." Common triggers include the ranks, faces and colours of played cards (and how those values relate to the current top card), and changes between suits and parities (odd to even, even to odd), but they may also be triggered by non-card events such as speaking (or failing to speak) a certain word when playing a card. Consequences are often simply "this card may not be played", but may alternatively include the drawing of extra cards, the swapping of cards between players' hands, and alterations to the turn sequence. Bartok can be made into a drinking game if the consequence of a play is that a player must take a drink. Many rules can be made cumulative. For example, "If a 7 is played, the next player picks up two cards and forfeits their turn or plays another 7. If they play another 7, the player after them picks up