Casino Card Game- Form a Building/Build When number cards are combined with other cards on the table, เกมสล็อต it is called as forming a build. A build is a collection of number cards that are captured with a single number card. The player making a build has to announce the value of capturing card. These builds have to include the cards a player just played and cannot include only those cards on the table. Builds are always captured as an entire unit.