diff --git a/ruby/bin/gosuhunt b/ruby/bin/gosuhunt
index 2229029..d753dce 100755
--- a/ruby/bin/gosuhunt
+++ b/ruby/bin/gosuhunt
@@ -7,40 +7,64 @@ require 'minehunt'
 
 class GosuHunt < Gosu::Window
   def initialize( number_of_mines = 20 )
-    super 640, 480
+    super 325, 180
+
     self.caption = "Gosu Hunt"
 
     @number_of_mines = number_of_mines
     @field = MineHunt::Board.new( @number_of_mines )
     @finished = false
     @state = { dead: false, victory: false }
+
+    @images = { explorer: Gosu::Image.from_text( '()', 20 ),
+                dead_explorer: Gosu::Image.from_text( '☠ ', 20 ),
+                door: Gosu::Image.from_text( '=>', 20 ),
+                mine: Gosu::Image.from_text( '<>', 20 ),
+                cell: Gosu::Image.from_text( '██', 20 ),
+                visited_cell: Gosu::Image.from_text( '  ', 20 ) }
+  end
+
+  def new_level
+    @field = MineHunt::Board.new( @number_of_mines )
+    @finished = false
+    @state = { dead: false, victory: false }
   end
 
   def button_up(id)
-    case id
-    when Gosu::KB_ESCAPE, Gosu::KB_Q
-      close
-    when Gosu::KB_R
-      @field = MineHunt::Board.new( @number_of_mines )
-      @state = { dead: false, victory: false }
-    when Gosu::KB_NUMPAD_1
-      @state = @field.move 'down-left'
-    when Gosu::KB_NUMPAD_2, Gosu::KB_DOWN
-      @state = @field.move 'down'
-    when Gosu::KB_NUMPAD_3
-      @state = @field.move 'down-right'
-    when Gosu::KB_NUMPAD_4, Gosu::KB_LEFT
-      @state = @field.move 'left'
-    when Gosu::KB_NUMPAD_6, Gosu::KB_RIGHT
-      @state = @field.move 'right'
-    when Gosu::KB_NUMPAD_7
-      @state = @field.move 'up-left'
-    when Gosu::KB_NUMPAD_8, Gosu::KB_UP
-      @state = @field.move 'up'
-    when Gosu::KB_NUMPAD_9
-      @state = @field.move 'up-right'
+    if @finished
+      case id
+      when Gosu::KB_ESCAPE, Gosu::KB_Q
+        close
+      when Gosu::KB_R
+        new_level
+      else
+        super
+      end
     else
-      super
+      case id
+      when Gosu::KB_ESCAPE, Gosu::KB_Q
+        close
+      when Gosu::KB_R
+        new_level
+      when Gosu::KB_NUMPAD_1
+        @state = @field.move 'down-left'
+      when Gosu::KB_NUMPAD_2, Gosu::KB_DOWN
+        @state = @field.move 'down'
+      when Gosu::KB_NUMPAD_3
+        @state = @field.move 'down-right'
+      when Gosu::KB_NUMPAD_4, Gosu::KB_LEFT
+        @state = @field.move 'left'
+      when Gosu::KB_NUMPAD_6, Gosu::KB_RIGHT
+        @state = @field.move 'right'
+      when Gosu::KB_NUMPAD_7
+        @state = @field.move 'up-left'
+      when Gosu::KB_NUMPAD_8, Gosu::KB_UP
+        @state = @field.move 'up'
+      when Gosu::KB_NUMPAD_9
+        @state = @field.move 'up-right'
+      else
+        super
+      end
     end
 
     @finished = @state[:dead] || @state[:victory]
@@ -57,27 +81,21 @@ class GosuHunt < Gosu::Window
       self.caption = "#{@field.number_of_mines} mines, #{@field.count_nearby_mines} nearby, score #{@field.score}"
     end
 
-    theme = { explorer: '()',
-              dead_explorer: '☠ ',
-              door: '=>',
-              mine: '<>',
-              cell: '██',
-              visited_cell: '  ' }
+    Gosu::Font.new( 20 ).draw_text( self.caption, 0, 0, 0 )
 
     @field.height.times do |y|
       @field.width.times do |x|
-        Gosu::Image.from_text( if [@field.explorer_x, @field.explorer_y] == [x, y]
-                                 @state[:dead] ? theme[:dead_explorer] : theme[:explorer]
-                               elsif [@field.width, @field.height] == [x + 1, y + 1]
-                                 theme[:door]
-                               elsif @field.field[[x, y]].open
-                                 theme[:visited_cell]
-                               elsif @field.field[[x, y]].mine && ( @state[:dead] || @state[:victory] )
-                                 theme[:mine]
-                               else
-                                 theme[:cell]
-                               end, 20 )
-                   .draw( x * 2 * 10, y * 20, 0 )
+        ( if [@field.explorer_x, @field.explorer_y] == [x, y]
+            @state[:dead] ? @images[:dead_explorer] : @images[:explorer]
+          elsif [@field.width, @field.height] == [x + 1, y + 1]
+            @images[:door]
+          elsif @field.field[[x, y]].open
+            @images[:visited_cell]
+          elsif @field.field[[x, y]].mine && ( @state[:dead] || @state[:victory] )
+            @images[:mine]
+          else
+            @images[:cell]
+          end ).draw( x * 2 * 10, (y * 20) + 20, 0 )
       end
     end
   end