I remember reading an article about lucid dreaming (Being aware you're dreaming, and being able to control the dream), and it mentioned 2 tests you can do to see if your dreaming:
Look into a mirror - Your mind when *simulating* the world can't process reflections. They are just silvery surfaces.
Flick a light switch - in a dream nothing will happen.
When you say seeing stuff, are the figures made up of what I can only describe as noise? When it's dark I see noise in the image I see like snow on a un-tuned television. This noise often forms shapes, faces, silhouettes. It's just your brain trying to see patterns in the noise. Shine a light at the figures to see if they're real.
Over the Easter break