Click a unit, click a highlighted tile to move. Walk over a seed to carry it,
then get within 2 tiles of your queen to bank it; dirt is scooped up on the spot.
B spends 2 dirt on a wall in front of your ant — you can hit B first, walk,
then pick the tile. Attack a wall to smash it. Turns end on their own once your
unit is spent — End Turn is only needed to pass up a shot.
Kill the enemy queen to win. Esc cancels.