itch.io

Cool! I would have made the tv screen an emissive emitter to provide the frontal screen glow... 

The main trick for making a scene look set in a dark room is to have bright spotlights that light up your characters, while the broader environment lights are left very dim. The rest of the scene will be dark and convey the impression of darkness while your characters are still decently lit.

Or you can take the lazy route and adjust the exposure in the camera settings to make the scene look brighter or darker.   Easier than adjusting 4 lights.