This is honestly a great concept!
I like that the "fog of war" only dissipates in the direction you are looking. That means I have to remember to look around when I walk into a room to make sure I see everything. And it is actually fun to reveal the room by looking around.
It is also nice that the fog of war dissipates slowly over time. It creates suspense, and makes it slightly harder to clear a room.
The game is presented as a quirky and fun game with upbeat music, but I think it could work great as a horror game too. Imagine it had a darker theme, like zombie apocalypse, with eerie background music, and zombie growling sounds. It would be really scary to play thanks to the fog of war!
This is a great jam game - everything is so well done. Good job, everyone.