diff --git a/Graphics/FreeGame/Backends/GLFW.hs b/Graphics/FreeGame/Backends/GLFW.hs
--- a/Graphics/FreeGame/Backends/GLFW.hs
+++ b/Graphics/FreeGame/Backends/GLFW.hs
@@ -106,6 +106,8 @@
     , ?refTextures :: IORef (IM.IntMap Texture)
     , ?refFrame :: IORef Int
     , ?frameTime :: Double
+    , ?windowTitle :: String, ?windowMode :: Bool
+    , ?cursorVisible :: Bool
     ) => [Int] -> Game a -> IO (Maybe a)
 run is (Pure x) = do
     m <- readIORef ?refTextures
@@ -143,9 +145,22 @@
         (x, y) <- getMousePosition
         b0 <- mouseButtonIsPressed MouseButton0
         b1 <- mouseButtonIsPressed MouseButton1
-        b2 <- mouseButtonIsPressed MouseButton1
+        b2 <- mouseButtonIsPressed MouseButton2
         w <- getMouseWheel
         run is $ fcont $ I.MouseState (Vec2 (fromIntegral x) (fromIntegral y)) b0 b2 b1 w
+    GetGameParam fcont -> do
+        dim <- GLFW.getWindowDimensions
+        GL.Color4 r g b a <- get GL.clearColor
+        run is $ fcont $ GameParam { framePerSecond = floor $ 1 / ?frameTime
+                                   , windowSize = dim
+                                   , windowTitle = ?windowTitle
+                                   , windowed = ?windowMode
+                                   , cursorVisible = ?cursorVisible
+                                   , clearColor = Color (realToFrac r) 
+                                                        (realToFrac g) 
+                                                        (realToFrac b) 
+                                                        (realToFrac a)
+                                   }
     QuitGame -> return Nothing
 
 -- | Run 'Game' using OpenGL and GLFW.
@@ -155,19 +170,22 @@
     pf <- openGLProfile
     let ?windowWidth = fst $ windowSize param
         ?windowHeight = snd $ windowSize param
-    
+        ?windowTitle = windowTitle param
+        ?windowMode = windowed param
+        ?cursorVisible = cursorVisible param
     openWindow $ defaultDisplayOptions {
         displayOptions_width = fromIntegral ?windowWidth
         ,displayOptions_height = fromIntegral ?windowHeight
-        ,displayOptions_displayMode = Window
+        ,displayOptions_displayMode = if ?windowMode then Window else Fullscreen
         ,displayOptions_windowIsResizable = False
         ,displayOptions_openGLProfile = pf
         ,displayOptions_numDepthBits = 8
     }
     
-    unless (cursorVisible param) $ disableMouseCursor
+    if ?cursorVisible then enableMouseCursor 
+                      else disableMouseCursor
 
-    setWindowTitle $ windowTitle param
+    setWindowTitle $ ?windowTitle
     
     GL.lineSmooth $= GL.Enabled
     GL.blend      $= GL.Enabled
diff --git a/Graphics/FreeGame/Base.hs b/Graphics/FreeGame/Base.hs
--- a/Graphics/FreeGame/Base.hs
+++ b/Graphics/FreeGame/Base.hs
@@ -36,6 +36,7 @@
     -- * Settings
     ,GameParam(..)
     ,defaultGameParam
+    ,getCurrentGameParam
 
     -- * Deprecated
     ,loadPicture
@@ -64,12 +65,14 @@
     | DrawPicture Picture a
     | AskInput Key (Bool -> a)
     | GetMouseState (MouseState -> a)
+    | GetGameParam (GameParam -> a)
     | QuitGame
 
 instance Functor GameAction where
     fmap f (DrawPicture a cont) = DrawPicture a (f cont)
     fmap f (AskInput a cont)    = AskInput a (f . cont)
     fmap f (GetMouseState cont) = GetMouseState (f . cont)
+    fmap f (GetGameParam cont)  = GetGameParam (f . cont)
     fmap f (EmbedIO m) = EmbedIO (fmap f m)
     fmap f (Bracket m) = Bracket (fmap f m)
     fmap f (Tick cont) = Tick (f cont)
@@ -103,6 +106,10 @@
 getMouseState :: MonadFree GameAction m => m MouseState
 getMouseState = wrap $ GetMouseState return
 
+-- | Get the game params that apply to the currently running game.
+getCurrentGameParam :: MonadFree GameAction m => m GameParam
+getCurrentGameParam = wrap $ GetGameParam return
+
 -- | Lift a picture transformation into transformation of 'GameAction'
 transPicture :: (Picture -> Picture) -> GameAction cont -> GameAction cont
 transPicture f (DrawPicture p cont) = DrawPicture (f p) cont
@@ -133,7 +140,7 @@
         ,windowed :: Bool
         ,cursorVisible :: Bool
         ,clearColor :: Color
-    }
+    } deriving Show
 
 -- | 640*480(windowed), 60fps
 defaultGameParam :: GameParam
diff --git a/Graphics/FreeGame/Simple.hs b/Graphics/FreeGame/Simple.hs
--- a/Graphics/FreeGame/Simple.hs
+++ b/Graphics/FreeGame/Simple.hs
@@ -30,6 +30,7 @@
 
     -- * About Picture
     ,Picture(..)
+    ,Bitmap
     ,loadBitmapFromFile
     ,Vec2(..)
 
diff --git a/free-game.cabal b/free-game.cabal
--- a/free-game.cabal
+++ b/free-game.cabal
@@ -1,5 +1,5 @@
 name:                free-game
-version:             0.3.1.3
+version:             0.3.1.4
 synopsis:            Create graphical applications for free.
 description:         Cross-platform GUI library based on free monads.
 homepage:            https://github.com/fumieval/free-game