Game worked for me fine after pressing escape once and then clicking continue.
Good atmosphere, and I can see the concept of carrying/spreading a single lightsource around making for good puzzles, but sadly I could'nt make my way out of the second room. I tried switching on all the capsule-shaped lights, but couldn't find a way to get to the last one, until I eventually fell into a pit and died :(
Otherwise the controls of throwing the orb/interacting with lightsources are very intuitive, well done!