diff --git a/src/diceBot/BBN.rb b/src/diceBot/BBN.rb
new file mode 100644
index 000000000..5d2571872
--- /dev/null
+++ b/src/diceBot/BBN.rb
@@ -0,0 +1,188 @@
+# -*- coding: utf-8 -*-
+
+class BBN < DiceBot
+  # ダイスボットで使用するコマンドを配列で列挙する
+  setPrefixes(['\d+BN.*'])
+
+  ID = 'BBN'
+
+  NAME = 'BBNTRPG'
+
+  SORT_KEY = 'ひいひいえぬTRPG'
+
+  HELP_MESSAGE =  <<MESSAGETEXT
+・判定(xBN±y>=z[c,f])
+　xD6の判定。クリティカル、ファンブルの自動判定を行います。
+　1Dの場合はクリティカル、ファンブルなし。2Dの場合は6ゾロと1ゾロのみクリティカル、ファンブルになります。
+　クリティカルとファンブルが同時に発生した場合、自動的に相殺されます。
+　x：xに振るダイス数を入力。
+　y：yに修正値を入力。省略可能。
+  z：zに目標値を入力。省略可能。
+  c：クリティカルに必要なダイス目「６」の数の増減。省略可能。
+  f：ファンブルに必要なダイス目「６」の数の増減。省略可能。
+　例） 3BN+4　3BN>=8　3BN+1>=10[6]
+MESSAGETEXT
+
+  def rollDiceCommand(command)
+    return getCheckRollDiceCommandResult(command)
+  end
+
+  def getCheckRollDiceCommandResult(command)
+    test = "test"
+    return nil unless /(\d+)BN([\+\-\d]*)(>=([\+\-\d]*))?(\[([\+\-\d]*)?(,[\+\-\d]*)?\])?/i === command
+
+    diceCount = Regexp.last_match(1).to_i
+    modifyText = (Regexp.last_match(2) || '')
+    difficultyText = (Regexp.last_match(4) || '')
+    cfText = (Regexp.last_match(5) || '')
+
+    modify = RetNum(modifyText)
+    difficulty = RetNum(difficultyText)
+
+    # ダイスロール
+    dice, dice_str = roll(diceCount, 6)
+    diceList = dice_str.split(/,/).collect { |i| i.to_i }.sort
+
+    total = dice + modify
+
+    # 出力文の生成
+    result = "(#{command}) ＞ #{dice}[#{dice_str}]#{modifyText} ＞ #{total}"
+
+    cricicalCheck = isCritical(diceList, cfText, diceCount)
+    fambleCheck = isFamble(diceList, cfText, diceCount)
+
+    # クリティカル・ファンブルチェック
+    if cricicalCheck != 0 && fambleCheck != 0
+      result += getJudgeResultString(difficulty, total)
+    elsif cricicalCheck >= 1
+      result += " ＞ クリティカル！ ＞ "
+      result += getCriticalResultString(difficulty, total, cricicalCheck)
+    elsif fambleCheck >= 1
+      result += " ＞ ファンブル！"
+    else
+      result += getJudgeResultString(difficulty, total)
+    end
+
+    return result
+  end
+
+  def isCritical(diceList, cfText, dicecount)
+    temp = diceList.select { |i| i == 6 }.size
+
+    if cfText.nil?
+      critical = 0
+    else
+      if /\[([\+\-\d]*)(,([\+\-\d]*)?)?\]/ =~ cfText
+        criticalText = Regexp.last_match(1)
+        critical = RetNum(criticalText)
+      else
+        critical = 0
+      end
+    end
+
+    result = 0
+
+    targetFloat = dicecount.to_f / 2
+    target = targetFloat.ceil.to_i + critical
+
+    if dicecount == 2
+      target += 1
+    elsif dicecount == 1
+      temp = 0
+    end
+
+    if temp >= target
+      result = temp
+    else
+      result = 0
+    end
+    return result
+  end
+
+  def isFamble(diceList, cfText, dicecount)
+    temp = diceList.select { |i| i == 1 }.size
+
+    if cfText.nil?
+      famble = 0
+    else
+      if /\[([\+\-\d]*)(,([\+\-\d]*)?)?\]/ =~ cfText
+        fambleText = Regexp.last_match(3)
+        famble = RetNum(fambleText)
+      else
+        famble = 0
+      end
+    end
+
+    result = 0
+
+    targetFloat = dicecount.to_f / 2
+    target = targetFloat.ceil.to_i + famble
+
+    if dicecount == 2
+      target += 1
+    elsif dicecount == 1
+      temp = 0
+    end
+
+    if temp >= target
+      result = temp
+    else
+      result = 0
+    end
+    return result
+  end
+end
+
+# 成否判定
+def getJudgeResultString(difficulty, total)
+  return '' if difficulty.nil?
+
+  if total >= difficulty
+    return " ＞ 成功"
+  else
+    return " ＞ 失敗"
+  end
+end
+
+# クリティカルの成否判定
+def getCriticalResultString(difficulty, total, cricicalCheck)
+  return '' if difficulty.nil?
+
+  result = ""
+
+  flag = 0
+  count = cricicalCheck
+  while flag == 0
+    dice, dice_str = roll(count, 6)
+    diceList = dice_str.split(/,/).collect { |i| i.to_i }.sort
+    temp = diceList.select { |i| i == 6 }.size
+
+    temp2 = total
+    total += dice
+
+    if temp >= 1
+      count = temp
+      result += "#{temp2}+#{dice}[#{dice_str}]"
+      result += " ＞ 追加クリティカル！ ＞ "
+    else
+      result += "#{temp2}+#{dice}[#{dice_str}] ＞ #{total}"
+      flag = 1
+    end
+  end
+
+  if total >= difficulty
+    result += " ＞ 成功"
+  else
+    result += " ＞ 失敗"
+  end
+  return result
+end
+
+def RetNum(text)
+  if !text.nil?
+    result = text.gsub(/[^0-9\-]/, "")
+    return result.to_i
+  else
+    return 0
+  end
+end