Most are grayed out until you have the technology available to build the improvement. You’ll see icons for farms, encampments and for luxury resources like honey. Each icon represents the “best things,” at least according to the game, that your Builder can build on that tile. When you select a Builder icons appear on some of the surrounding tiles. When all the Builder’s charges are used it disappears from the game.
Builders can also be used to get technology and civics boosts by performing the required actions for those items. Builders start with three available charges, and each harvest operation or tile improvement uses up one charge. On the next turn you chose the action from their information bar and the action is completed instantly, regardless of whether you’re harvesting a resource or constructing an improvement like a mine. You use Builders by moving them to the tile you want worked. A new Builder, unless the base number is increased through governors and policy cards, starts out with 3 charges. If the Builder icon has two Builders that means it has two charges left. You can tell how many charges a Builder has by its icon or at its information menu. These actions, or charges, are things like making tile improvements or clearing out resources. The Builder is available at the very start of the game and it begins with actions at the start of the game called charges.
