Normal Maps: Blender 3D Game Engine

Enable Blender GLSL Materials

User Preference menu >> Game >> Blender GLSL Materials

GLSL:  Enable Lights -- Enable Shadows

User Preference menu >> Game >> GLSL Material Settings
Enable Lights
Enable Shaders

Viewport Shading Textured

3D View menu >> Viewport Shading box
Draw type -- Textured

Add a material to the game object

Buttons Window menu >> Shading (F5) >> Material buttons
Links and Pipeline tab:
Link to Object
Add New
Add a Normal Map texture to the material  

Buttons Window menu >> Shading (F5) >> Texture buttons (F6)
Texture tab
Add New
Texture Type:  Image
Image tab
Map Image tab
Normal Map button

The Blender 3D and game engine tutorials were created as a series of step by step instructions and help you create computer games. Use the tutorials to make casual video games, First Person Shooter games, role playing games, racing simulation games and more. Use the tutorials as a self paced learning tool to model and program your own three-dimensional world and then play on your computer.