1.  Engine: Blender Game
  • Info menu >> Render Engine box >> Blender Game
  •  There are menus that are only available when the Blender Game render engine is selected
2.  Viewport Shading: Texture
  • 3D View menu >> Viewport Shading box >> Texture
  • Texture Viewport Shading renders the game objects with the textures you add
3.  Material Shading: GLSL
  • Properties menu >> Render button >> Shading tab >> GLSL button
  • Enable: Lights
  • Enable: Shaders
  • Enable: Shadows
  • Enable: Environment Lighting
  • Enable: Ramps
  • Enable: Nodes
  • Enable: Extra Textures
  • GLSL settings appear only when the Render Engine: Blender Game is selected
  • You can disable any GLSL settings that you don't need