There's light with no lightsource?

I’m wanting to create a dark room, but even with having no lights it’s already partially lit up. Is there a global illumination setting somewhere I can disable? Otherwise, what would be the best option for creating dark areas? Black fog? Near-black textures?

Using Unity free if it matters. I don’t expect shadows, I just don’t want to see anything without a lightsource.

Maybe your ambient light setting? In “Render Settings” within the “Edit” menu.

Heh, actually I had briefly glanced over that earlier. It looked dark enough to be black, but apparently it wasn’t. Thanks!