A board game that unexpectedly progresses and satisfies the players more than conventional board games. Dice selected from developable dice are rolled. According to the result of the rolling of the dice, dice (51-61) are developed over a playing field (1). The developed dice (51-61) are placed on the player’s pieces. According to the result of the rolling of the dice, the cost necessary for the progress of the game is pooled in an addition/subtraction unit. The name of group, level, and ability of each piece are indicated on the corresponding card. Each of the players pays the pooled cost to advance the piece, attack a piece of the opponent, and defends himself. The player who has done predetermined damage to a specific piece of the opponent wins.