HI.
I am trying to make a scene pitch black, so i can then light it completly how i want.
Im finding though with all lights deleted and ambient intensity set to 0 in WINDOW > LIGHTING . My objects are still visible in game mode.
Is there anything i am missing?
have you checked to see if your light is aimed at your scene? click on the light object and hit the 'f" button when your mouse is over the scene view. that will zoom you to where the light is and maybe you can see if you need to rotate the light source?
Thanks for the reply.
But I have no lights in my scene. I am trying to make an area which pitch black however there still seems to be some sort of ambient lighting.
I’ve set ambient to black and reduced ambient intensity to 0 but still getting light from somewhere.
I was able to achieve complete darkness in a new scene by disabling the light sources, setting the ambient intensity to zero, setting the skybox to none, and setting the camera’s background to black.
I think the only thing you’re missing is setting the skybox on the camera to solid color / black.
Like Ryiah, I tested it and it works.
Of course, if you have already baked some lighting into the scene you will need to re-bake or whatever. 
Ahhh setting the skybox to nothing is something i havent done. It is set to solid colour black however in camera setting.
If i have baked the lighting onto the objects how do i go about rebaking them?
If you have no light, no need to re-bake. Just open the Lighting window, scroll to the bottom, and clear any bake data.
That worked. Thank you so much.
I had put an area spot light in earlier and set it to mixed. I’m guessing dynamic uses up more resources when running?
Realtime lights are more work for the CPU. Baked lightmaps increase the total size of your build (since lightmaps are just texture files). So it’s trading one thing for something else, but to answer your question: pretty much.
What problem?
The situation above was user error and was fixed, I believe. Did you follow those steps?