Board game played by plural players and method of play thereof

A method of play of a board game which plural players play, according to rules, comprising:

• a play field having a plurality of polygonal grids extending continuously and used by said plural players, and
• plural game component sets used by said plural players for their own play,
• said game component sets comprising:
• plural dice,
• plural kinds of pieces respectively having visually identifiable features and belonging to predetermined plural groups and/or predetermined levels,
• plural cards corresponding to said plural kinds of pieces and describing at least denominations to identify corresponding pieces, capacity or ability of the corresponding pieces, conditions for wielding or exerting said capacity or ability of said pieces, and said groups and/or said levels;
• said dice being polyhedrons consisting of n (n is an integer of three or more) polygonal plates which have substantially the same dimensions with said polygonal grids of said play field and are connected in such a manner that unfolding of said dice is possible,
• wherein each of said polygonal plates is connected to specific adjacent polygonal plates in such a manner that each of said polygonal plates is so as to be connected to those specific adjacent polygonal plates when said die is unfolded two-dimensionally,
• wherein the outside of said polygonal plates are depicted with Die-Unfolding Mark which is a decisive factor for unfolding each of said dice, Advancement Mark which allows to save cost necessary for advancing said pieces, more than one Execution Marks which allow to save costs necessary for making said pieces to wield or exert powers thereof, and more than one Identification Marks for indicating the Group and/or Level of said pieces,
• said rules setting forth that each player has a turn in order and conduct during each of said turn:
• (a) Die-Rolling Step-each player chooses plural dice from among his/her dice in his/her game component set and roll those dice on a dice rolling place;
• (b) Die-Unfolding Step-when a Die-Unfolding Mark is respectively included among the judgement objects depicted on the outside of the polygonal plates of the predetermined number of dice, each player will unfold (or open up) two-dimensionally a die having a Die-Unfolding Mark and place the unfolded die on a play field to cover n grids which are connected to one another;
• (c) Piece-Placement Step-each player chooses, according to the group and/or level recognized from the plural dice rolled on a play field, one piece from among pieces he/she owns in his/her game component set and then places the piece on one of the polygonal plates constituting said unfolded die;
• (d) Cost-Saving Step-both when a die is unfolded and when not, each player can save the number of marks which appear as cost for each mark, said marks may be Advancement Marks and/or Execution Marks when such marks are included among the judgement objects depicted on the outside of the polygonal plates of dice;
• (e) Advancement/Attack Step-each player advances a piece on the play field and/or make a piece wield or exert power to attack or destroy one of the opponent's pieces by paying the predetermined cost from among the saved costs;
• and
• (f) Closing-Step-each player ends his/her turn after carrying out Advancement Step and/or Attack Step or without carrying out those steps.