Command Blocks are blocks used in the Mario and Luigi Series. They are used for actions during battles. There are many types of command blocks like Jump Command Blocks, Item Command Blocks, Special Attack Command Blocks and much more. To use a Command Block, Mario, Luigi, or Bowser has to select the desired Command Block And jump or punch it. When in battle, a the player has to select the Command Blocks first then press A, B, X, or Y to confirm the block that they chose. Then depending on the block they chose, it may take them to a menu ore just a confirmation screen.