diff --git a/Data/Scripts/007_Objects and windows/002_MessageConfig.rb b/Data/Scripts/007_Objects and windows/002_MessageConfig.rb
index 62146dd6e..3eec6c873 100644
--- a/Data/Scripts/007_Objects and windows/002_MessageConfig.rb	
+++ b/Data/Scripts/007_Objects and windows/002_MessageConfig.rb	
@@ -232,7 +232,7 @@ end
 def pbRepositionMessageWindow(msgwindow, linecount=2)
   msgwindow.height=32*linecount+msgwindow.borderY
   msgwindow.y=(Graphics.height)-(msgwindow.height)
-  if $game_system && $game_system.respond_to?("message_position")
+  if $game_system
     case $game_system.message_position
     when 0  # up
       msgwindow.y=0
@@ -241,11 +241,7 @@ def pbRepositionMessageWindow(msgwindow, linecount=2)
     when 2
      msgwindow.y=(Graphics.height)-(msgwindow.height)
     end
-  end
-  if $game_system && $game_system.respond_to?("message_frame")
-    if $game_system.message_frame != 0
-      msgwindow.opacity = 0
-    end
+    msgwindow.opacity = 0 if $game_system.message_frame != 0
   end
 end
 
diff --git a/Data/Scripts/007_Objects and windows/011_Messages.rb b/Data/Scripts/007_Objects and windows/011_Messages.rb
index 029698490..382938bda 100644
--- a/Data/Scripts/007_Objects and windows/011_Messages.rb	
+++ b/Data/Scripts/007_Objects and windows/011_Messages.rb	
@@ -1,73 +1,8 @@
 #===============================================================================
 #
 #===============================================================================
-class Scene_Map
-  def updatemini
-    oldmws=$game_temp.message_window_showing
-    $game_temp.message_window_showing=true
-    loop do
-      $game_map.update
-      $game_player.update
-      $game_system.update
-      if $game_screen
-        $game_screen.update
-      else
-        $game_map.screen.update
-      end
-      break unless $game_temp.player_transferring
-      transfer_player
-      break if $game_temp.transition_processing
-    end
-    $game_temp.message_window_showing=oldmws
-    @spriteset.update if @spriteset
-    @message_window.update if @message_window
-  end
-end
-
-
-
-class Scene_Battle
-  def updatemini
-    if self.respond_to?("update_basic")
-      update_basic(true)
-      update_info_viewport                  # Update information viewport
-    else
-      oldmws=$game_temp.message_window_showing
-      $game_temp.message_window_showing=true
-      # Update system (timer) and screen
-      $game_system.update
-      if $game_screen
-        $game_screen.update
-      else
-        $game_map.screen.update
-      end
-      # If timer has reached 0
-      if $game_system.timer_working && $game_system.timer == 0
-        # Abort battle
-        $game_temp.battle_abort = true
-      end
-      # Update windows
-      @help_window.update if @help_window
-      @party_command_window.update if @party_command_window
-      @actor_command_window.update if @actor_command_window
-      @status_window.update if @status_window
-      $game_temp.message_window_showing=oldmws
-      @message_window.update if @message_window
-      # Update sprite set
-      @spriteset.update if @spriteset
-    end
-  end
-end
-
-
-
 def pbMapInterpreter
-  if $game_map.respond_to?("interpreter")
-    return $game_map.interpreter
-  elsif $game_system
-    return $game_system.map_interpreter
-  end
-  return nil
+  return $game_system&.map_interpreter
 end
 
 def pbMapInterpreterRunning?
@@ -76,27 +11,11 @@ def pbMapInterpreterRunning?
 end
 
 def pbRefreshSceneMap
-  if $scene && $scene.is_a?(Scene_Map)
-    if $scene.respond_to?("miniupdate")
-      $scene.miniupdate
-    else
-      $scene.updatemini
-    end
-  elsif $scene && $scene.is_a?(Scene_Battle)
-    $scene.updatemini
-  end
+  $scene.miniupdate if $scene && $scene.is_a?(Scene_Map)
 end
 
 def pbUpdateSceneMap
-  if $scene && $scene.is_a?(Scene_Map) && !pbIsFaded?
-    if $scene.respond_to?("miniupdate")
-      $scene.miniupdate
-    else
-      $scene.updatemini
-    end
-  elsif $scene && $scene.is_a?(Scene_Battle)
-    $scene.updatemini
-  end
+  $scene.miniupdate if $scene && $scene.is_a?(Scene_Map) && !pbIsFaded?
 end
 
 #===============================================================================
@@ -406,17 +325,7 @@ end
 # Money and coins windows
 #===============================================================================
 def pbGetGoldString
-  moneyString=""
-  begin
-    moneyString=_INTL("${1}", $player.money.to_s_formatted)
-  rescue
-    if $data_system.respond_to?("words")
-      moneyString=_INTL("{1} {2}",$game_party.gold,$data_system.words.gold)
-    else
-      moneyString=_INTL("{1} {2}",$game_party.gold,Vocab.gold)
-    end
-  end
-  return moneyString
+  return _INTL("${1}", $player.money.to_s_formatted)
 end
 
 def pbDisplayGoldWindow(msgwindow)
@@ -583,8 +492,7 @@ def pbMessageDisplay(msgwindow,message,letterbyletter=true,commandProc=nil)
     break if text == last_text
   end
   colortag = ""
-  if $game_system && $game_system.respond_to?("message_frame") &&
-     $game_system.message_frame != 0
+  if $game_system && $game_system.message_frame != 0
     colortag = getSkinColor(msgwindow.windowskin,0,true)
   else
     colortag = getSkinColor(msgwindow.windowskin,0,isDarkSkin)
diff --git a/Data/Scripts/008_Audio/002_Audio_Play.rb b/Data/Scripts/008_Audio/002_Audio_Play.rb
index af7856ab8..b171f6af2 100644
--- a/Data/Scripts/008_Audio/002_Audio_Play.rb
+++ b/Data/Scripts/008_Audio/002_Audio_Play.rb
@@ -53,7 +53,7 @@ def pbBGMPlay(param,volume=nil,pitch=nil)
   return if !param
   param=pbResolveAudioFile(param,volume,pitch)
   if param.name && param.name!=""
-    if $game_system && $game_system.respond_to?("bgm_play")
+    if $game_system
       $game_system.bgm_play(param)
       return
     elsif (RPG.const_defined?(:BGM) rescue false)
@@ -72,10 +72,10 @@ def pbBGMFade(x=0.0); pbBGMStop(x); end
 
 # Fades out or stops BGM playback. 'x' is the time in seconds to fade out.
 def pbBGMStop(timeInSeconds=0.0)
-  if $game_system && timeInSeconds>0.0 && $game_system.respond_to?("bgm_fade")
+  if $game_system && timeInSeconds > 0.0
     $game_system.bgm_fade(timeInSeconds)
     return
-  elsif $game_system && $game_system.respond_to?("bgm_stop")
+  elsif $game_system
     $game_system.bgm_stop
     return
   elsif (RPG.const_defined?(:BGM) rescue false)
@@ -103,7 +103,7 @@ def pbMEPlay(param,volume=nil,pitch=nil)
   return if !param
   param=pbResolveAudioFile(param,volume,pitch)
   if param.name && param.name!=""
-    if $game_system && $game_system.respond_to?("me_play")
+    if $game_system
       $game_system.me_play(param)
       return
     elsif (RPG.const_defined?(:ME) rescue false)
@@ -153,7 +153,7 @@ def pbBGSPlay(param,volume=nil,pitch=nil)
   return if !param
   param=pbResolveAudioFile(param,volume,pitch)
   if param.name && param.name!=""
-    if $game_system && $game_system.respond_to?("bgs_play")
+    if $game_system
       $game_system.bgs_play(param)
       return
     elsif (RPG.const_defined?(:BGS) rescue false)
@@ -172,10 +172,10 @@ def pbBGSFade(x=0.0); pbBGSStop(x); end
 
 # Fades out or stops BGS playback. 'x' is the time in seconds to fade out.
 def pbBGSStop(timeInSeconds=0.0)
-  if $game_system && timeInSeconds>0.0 && $game_system.respond_to?("bgs_fade")
+  if $game_system && timeInSeconds > 0.0
     $game_system.bgs_fade(timeInSeconds)
     return
-  elsif $game_system && $game_system.respond_to?("bgs_play")
+  elsif $game_system
     $game_system.bgs_play(nil)
     return
   elsif (RPG.const_defined?(:BGS) rescue false)
@@ -203,7 +203,7 @@ def pbSEPlay(param,volume=nil,pitch=nil)
   return if !param
   param = pbResolveAudioFile(param,volume,pitch)
   if param.name && param.name!=""
-    if $game_system && $game_system.respond_to?("se_play")
+    if $game_system
       $game_system.se_play(param)
       return
     end
@@ -236,12 +236,8 @@ end
 
 # Plays a sound effect that plays when the player moves the cursor.
 def pbPlayCursorSE
-  if $data_system && $data_system.respond_to?("cursor_se") &&
-     $data_system.cursor_se && $data_system.cursor_se.name!=""
+  if !nil_or_empty?($data_system&.cursor_se&.name)
     pbSEPlay($data_system.cursor_se)
-  elsif $data_system && $data_system.respond_to?("sounds") &&
-     $data_system.sounds && $data_system.sounds[0] && $data_system.sounds[0].name!=""
-    pbSEPlay($data_system.sounds[0])
   elsif FileTest.audio_exist?("Audio/SE/GUI sel cursor")
     pbSEPlay("GUI sel cursor",80)
   end
@@ -249,12 +245,8 @@ end
 
 # Plays a sound effect that plays when a decision is confirmed or a choice is made.
 def pbPlayDecisionSE
-  if $data_system && $data_system.respond_to?("decision_se") &&
-     $data_system.decision_se && $data_system.decision_se.name!=""
+  if !nil_or_empty?($data_system&.decision_se&.name)
     pbSEPlay($data_system.decision_se)
-  elsif $data_system && $data_system.respond_to?("sounds") &&
-     $data_system.sounds && $data_system.sounds[1] && $data_system.sounds[1].name!=""
-    pbSEPlay($data_system.sounds[1])
   elsif FileTest.audio_exist?("Audio/SE/GUI sel decision")
     pbSEPlay("GUI sel decision",80)
   end
@@ -262,12 +254,8 @@ end
 
 # Plays a sound effect that plays when a choice is canceled.
 def pbPlayCancelSE
-  if $data_system && $data_system.respond_to?("cancel_se") &&
-     $data_system.cancel_se && $data_system.cancel_se.name!=""
+  if !nil_or_empty?($data_system&.cancel_se&.name)
     pbSEPlay($data_system.cancel_se)
-  elsif $data_system && $data_system.respond_to?("sounds") &&
-     $data_system.sounds && $data_system.sounds[2] && $data_system.sounds[2].name!=""
-    pbSEPlay($data_system.sounds[2])
   elsif FileTest.audio_exist?("Audio/SE/GUI sel cancel")
     pbSEPlay("GUI sel cancel",80)
   end
@@ -275,12 +263,8 @@ end
 
 # Plays a buzzer sound effect.
 def pbPlayBuzzerSE
-  if $data_system && $data_system.respond_to?("buzzer_se") &&
-     $data_system.buzzer_se && $data_system.buzzer_se.name!=""
+  if !nil_or_empty?($data_system&.buzzer_se&.name)
     pbSEPlay($data_system.buzzer_se)
-  elsif $data_system && $data_system.respond_to?("sounds") &&
-     $data_system.sounds && $data_system.sounds[3] && $data_system.sounds[3].name!=""
-    pbSEPlay($data_system.sounds[3])
   elsif FileTest.audio_exist?("Audio/SE/GUI sel buzzer")
     pbSEPlay("GUI sel buzzer",80)
   end