Problem:
In the Maze3D game tutorial the player can walk and look around, however… He can look through the walls, if he stands to near.
Very good explaination:
http://answers.unity3d.com/questions/143056/need-to-stop-camera-from-seeing-through-walls.html
Short:
Change the clipping plane on the main camera to 0.01, but beware of the side effects.
