Big Dig

Each turn in Big Dig, you draft a card from the center that shows you the shape in which you must dig (by crossing out squares on your personal dry-erase board). You must touch either the top of the digging area or a previously dug area, and you can't go through certain areas (though you may forgo regular digs to blow up stones that are in your way). When the cards in the center run out, everyone returns their cards to the center and flips them over so that different digging shapes are now available.