diff --git a/Gemfile b/Gemfile
index 351479b..4914365 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
 source "https://rubygems.org"
 
 gem "gosu"
-gem "perlin"
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+gem "ruby-opengl2"
\ No newline at end of file
diff --git a/game/scene.rb b/game/scene.rb
index d6fe4d0..84b9fa7 100644
--- a/game/scene.rb
+++ b/game/scene.rb
@@ -5,13 +5,10 @@ require_relative 'enemy/handler'
 require_relative 'weapons/handler'
 require_relative 'character'
 
-require 'perlin'
-
 class Game < Scene
   def initialize
     super
     @font = Gosu::Font.new(24)
-    @noise = Perlin::Generator.new(rand(1...1000), 1.0, 1)
     @floor_image = Gosu::Image.new("assets/images/floor.png", retro: true)
 
     @maze = Maze.new
diff --git a/run b/run
index 6b031bb..13490af 100755
--- a/run
+++ b/run
@@ -2,6 +2,6 @@
 
 # Dependencies
 # Gosu for rendering and input
-# Perlin noise for fog effect
+# Ruby-OpenGL2 for shaders
 
 load 'main.rb'
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