Great game! Very impressive that you managed to pull off a city builder in such a short timeframe! The game is tight and intuitive, while also being atmospheric, well done! I managed to win on my second try.
One thing that would make it more enjoyable for me is if there was a more prominent warning when a torch is about to run out, and maybe a short grace period to refuel before the fog comes back. I often lose buildings not because I can't afford to keep the torch lit but because I didn't notice it was about to run out.
The economy felt very generous, which is probably good for a jam game, but I would like to see a more difficult mode where resources are tight and you have to make hard choices about what to build and which torches to keep lit.
Overall great job on the jam!