diff --git a/app.rb b/app.rb
index 45e4759..a1d1df7 100755
--- a/app.rb
+++ b/app.rb
@@ -3,13 +3,14 @@ require "matrix"
 require "gosu"
 load "gosu_plugin.rb"
 
+load "ui.rb"
 load "config.rb"
 load "physobj.rb"
 load "objects.rb"
 load "controller.rb"
 
 class Window < Gosu::Window
-	attr_accessor :freeze, :caption, :physobjs, :planets, :controller, :camera
+	attr_accessor :freeze, :caption, :physobjs, :planets, :controller, :camera, :ui
 	attr_reader :width, :height, :fonts
 
 	def initialize(title, width, height, physobjs = [], planets = [])
@@ -28,10 +29,44 @@ class Window < Gosu::Window
 			big: @font2
 		}
 
-		@freeze = false
+		@freeze = true 
 		@controller = nil
 
 		@camera = Vector[0, 0]
+		@ui = []
+	end
+
+	def start_game
+		cube = Player.new("Alpha", self, 8, 8)
+		cube.show_info = false 
+		cube.thrust = 0.0075
+		cube.pos = Vector[800, 450 + 500]
+		cube.vel = Vector[1, 0]
+		self.controller = cube 
+
+		cube2 = PhysCube.new("Beta", self, 8, 8)
+		cube2.pos = Vector[800, 450 + 300]
+		cube2.vel = Vector[2, 0]
+		cube2.show_info = true
+
+		sol = Planet.new("Sol", self, 0xff_ffffaa, 1e2, 15, 1)
+		sol.pos = Vector[800, 450]
+
+		planet = Planet.new("Planet", self, 0xff_cccccc, 1e1, 8, 1)
+		planet.pos = Vector[800, 450 + 300]
+		planet.vel = Vector[-2, 0]
+		planet.show_info = true
+
+		sol_orbiters = [cube, cube2, planet]
+		sol.orbit(sol_orbiters)
+
+		self.planets << sol 
+		self.planets << planet
+		self.planets << cube
+
+		self.physobjs << cube
+		self.physobjs << cube2
+		self.physobjs << planet
 	end
 
 	def button_up(id)
@@ -91,12 +126,15 @@ class Window < Gosu::Window
 	end
 
 	def draw
+		@ui.each do |u|
+			u.render
+		end
+
 		if( @controller != nil ) then
 			@camera = Vector[self.width/2, self.height/2] - @controller.pos 
 			@font.draw_text(@controller.debug_string, 0, 32, 1, 1.0, 1.0, Gosu::Color::WHITE)
 		end
 		camx, camy = @camera[0], @camera[1]
-		p @camera
 
 		@font2.draw_text("Frozen: #{@freeze}", 0, 0, 1, 1.0, 1.0, Gosu::Color::WHITE)
 
@@ -115,36 +153,9 @@ class Window < Gosu::Window
 end
 
 
-window = Window.new("Physics!", 1600, 900)
-
-cube = Player.new("Alpha", window, 8, 8)
-cube.show_info = false 
-cube.thrust = 0.0075
-cube.pos = Vector[800, 450 + 500]
-cube.vel = Vector[1, 0]
-window.controller = cube 
-
-cube2 = PhysCube.new("Beta", window, 8, 8)
-cube2.pos = Vector[800, 450 + 300]
-cube2.vel = Vector[2, 0]
-cube2.show_info = true
-
-sol = Planet.new("Sol", window, 0xff_ffffaa, 1e2, 15, 1)
-sol.pos = Vector[800, 450]
-
-planet = Planet.new("Planet", window, 0xff_cccccc, 1e1, 8, 1)
-planet.pos = Vector[800, 450 + 300]
-planet.vel = Vector[-2, 0]
-planet.show_info = true
-
-sol_orbiters = [cube, cube2, planet]
-sol.orbit(sol_orbiters)
-
-window.planets << sol 
-window.planets << planet
+window = Window.new("Hohmann Miner", WINDOW_WIDTH, WINDOW_HEIGHT)
+window.fullscreen = WINDOW_FULLSCREEN
 
-window.physobjs << cube
-window.physobjs << cube2
-window.physobjs << planet
+mainmenu = MainMenu.new(window, true) 
 
 window.show
diff --git a/config.rb b/config.rb
index b91b6d8..7f9e3ea 100644
--- a/config.rb
+++ b/config.rb
@@ -1,4 +1,7 @@
 # UI
+WINDOW_WIDTH = 1600
+WINDOW_HEIGHT = 900
+WINDOW_FULLSCREEN = false 
 MAIN_FONT = "monospace"
 
 # Keybinds
diff --git a/ui.rb b/ui.rb
index bdc542c..f559500 100644
--- a/ui.rb
+++ b/ui.rb
@@ -1,11 +1,14 @@
 class UI
 	attr_accessor :x, :y
-	attr_reader :width, :height, :zindex, :uiscale
-	def initialize(x, y, width, height, zindex=1, uiscale=1)
+	attr_reader :window, :width, :height, :zindex, :uiscale
+	def initialize(window, x, y, width, height, zindex=1, uiscale=1)
+		@window = window
 		@x, @y = x, y
 		@width, @height = width, height
 		@zindex = zindex
 		@uiscale = uiscale
+
+		@window.ui << self
 	end
 
 	private def pos
@@ -25,15 +28,29 @@ class UI
 	end
 
 	def draw_rect(x, y, width, height, color=0xff_ffffff, z=0, mode=:default)
-		v1 = Vector[0, 0, color] + self.pos + Vector[x, y]
-		v2 = Vector[width, 0, color] + self.pos + Vector[x, y]
-		v3 = Vector[0, height, color] + self.pos + Vector[x, y]
-		v4 = Vector[width, height, color] + self.pos + Vector[x, y]
+		v1 = Vector[x, y, color] + self.pos 
+		v2 = Vector[width + x, y, color] + self.pos 
+		v3 = Vector[x, height + y, color] + self.pos 
+		v4 = Vector[width + x, height + y, color] + self.pos 
 		self.draw_quad(v1, v2, v3, v4, z, mode)
 	end
 
 	def draw_circle(x, y, r, c, z = 0, thickness = 1, sides = nil, mode = :default)
-		Gosu::draw_circle(x, y, r, c z, thickness, sides, mode)
+		Gosu::draw_circle(x, y, r, c, z, thickness, sides, mode)
 	end
+end
 
+class MainMenu < UI
+	attr_accessor :show
+	def initialize(window, show=false)
+		super window, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 99
+		@show = show
+	end
+
+	def render
+		if( @show ) then
+			self.draw_rect(0, 0, self.width, self.height, 0x99_aaaaaa)
+			self.draw_text("Hohmann Miner", self.window.fonts[:big], self.width/2, self.height/2)
+		end
+	end
 end