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(The event die is still rolled as normal.) Progress cards granting victory points are an exception, being played immediately (without regards to whose turn it is), while the Alchemist progress card, which allows a player to select the roll of the white and red dice, necessitates the card being played instead of rolling the numerical dice. However, they can generally only be played after the dice are rolled. Progress cards, unlike the development cards they replace, can be played on the turn that they are drawn, and more than one progress card can be played per turn. Higher levels of city improvements increase the chance that progress cards will be drawn, with the highest level of city improvement allowing progress cards to be drawn regardless of the value on the red die. When a castle appears on the event die, progress cards of the corresponding type may be drawn depending on the value of the red die.
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Yellow progress cards aid in commercial development, green progress cards aid in technological advancements, and blue progress cards allow for political moves. Progress cards are organized into three categories, corresponding to the three types of improvements. Because of the mechanics of progress cards explained below, one of the two white dice used in Settlers is replaced by a red die. The other significant outcome of the event die is Progress cards, which replace development cards.