diff --git a/scripts/Data_Settings.rb b/scripts/Data_Settings.rb
index 5b879d3..371f88b 100644
--- a/scripts/Data_Settings.rb
+++ b/scripts/Data_Settings.rb
@@ -18,6 +18,7 @@ module Settings
         :light                                   => true,
         :scaling_mode                            => 0,
         :vsync                                   => 0,
+        :max_particle_count_firefly				 => 30,
 
         # UI
         :in_game_timer                           => false,
@@ -232,6 +233,14 @@ class Window_Settings
         :name => "World machine shader",
         :parameter => :twm_shader
       },
+      {
+        :type => :slider,
+        :name => "Density of glen fireflies",
+        :parameter => :max_particle_count_firefly,
+		:icon => [1, 1],
+        :min => 0,
+        :max => 30
+      },
     ],
     "UI" => [
       {
diff --git a/scripts/Spriteset_Map.rb b/scripts/Spriteset_Map.rb
index f8236ce..cbc452c 100644
--- a/scripts/Spriteset_Map.rb
+++ b/scripts/Spriteset_Map.rb
@@ -260,7 +260,7 @@ class Spriteset_Map
         case @particles_type
         when :fireflies
           klass = Particle_Firefly
-          count = 30
+          count = Settings[:max_particle_count_firefly]
           layer = :front
         when :shrimp
           klass = Particle_Shrimp