diff --git a/lib/dxruby_sdl.rb b/lib/dxruby_sdl.rb
index eeac44f..005936a 100644
--- a/lib/dxruby_sdl.rb
+++ b/lib/dxruby_sdl.rb
@@ -223,5 +223,6 @@ module DXRubySDL
 require 'dxruby_sdl/sound'
 require 'dxruby_sdl/sound_effect'
 require 'dxruby_sdl/sprite'
+require 'dxruby_sdl/render_target'
 
 SDL.init(SDL::INIT_EVERYTHING)
diff --git a/lib/dxruby_sdl/render_target.rb b/lib/dxruby_sdl/render_target.rb
new file mode 100644
index 0000000..a1055dc
--- /dev/null
+++ b/lib/dxruby_sdl/render_target.rb
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+
+require 'forwardable'
+
+module DXRubySDL
+  class RenderTarget
+    extend Forwardable
+
+    attr_reader :_surface
+
+    def initialize(width, height, color)
+      @image = Image.new(width, height, color)
+      @_surface = @image._surface
+    end
+
+    def_delegators :@image, :draw
+    
+    def draw_font(x, y, string, font, option = {})
+      color = option[:color] || [255, 255, 255]
+      @image.draw_font(x, y, string, font, color) 
+    end
+
+    alias_method :drawFont, :draw_font
+  end
+end
diff --git a/lib/dxruby_sdl/window.rb b/lib/dxruby_sdl/window.rb
index 80a9a75..d1e320d 100644
--- a/lib/dxruby_sdl/window.rb
+++ b/lib/dxruby_sdl/window.rb
@@ -74,6 +74,16 @@ def draw(x, y, image, z = 0)
       screen.put(image._surface, x, y)
     end
 
+    def draw_scale(x, y, image, scalex, scaley, centerx = nil, centery = nil, z = 0)
+      opt = {
+        scale_x: scalex,
+        scale_y: scaley,
+        center_x: centerx,
+        center_y: centery,
+      }
+      draw_ex(x, y, image, opt)
+    end
+
     def draw_ex(x, y, image, hash = {})
       if hash[:z] && hash[:z] != 0
         raise NotImplementedError, 'Window.draw_ex(x, y, image, z: != 0)'
@@ -145,6 +155,7 @@ class << self
       attr_writer :height
       attr_writer :scale
 
+      alias_method :drawScale, :draw_scale
       alias_method :drawEx, :draw_ex
       alias_method :drawFont, :draw_font
       alias_method :openFilename, :open_filename