The sub-title for Troke is 'Castle Checkers'.Abstract strategy game where players move three different kinds of pieces (tower, wall, and moat) across a board using checker-type movement (diagonal movement, can not move backwards). Points are scored by capturing opponent's pieces and by forming complete 'castles' (a tower, wall, and moat) on the player's score line. Making moves becomes complicated as the game progresses because capturing pieces requires that additional moves be made. If these extra moves can not be made, then the original capture move can not be made. - BoardGameGeek