Create a Rocky Video Game Terrain

http://cg.tutsplus.com/tutorials/blender/create-a-lifelike-video-game-terrain-in-blender-day1/

http://cg.tutsplus.com/tutorials/blender/create-a-rocky-video-game-terrain-in-blender-day2/

http://cg.tutsplus.com/tutorials/blender/create-a-rocky-video-game-terrain-in-blender-day-3/

http://cg.tutsplus.com/tutorials/blender/create-a-rocky-video-game-terrain-in-blender-day-4/