Plenty of potential in this build alone but there's one big flaw: it's too dark. Literally. On Day 1, the floor is so dark-colored that the only way I was able to see the humanoid monster coming was by going into the bathroom room and wait for it to attack since it's easier to see it against the bathroom's floor tiles.

This game made me feel very dumb, as I couldn't find the 4th anomaly of day one after spending a lot of time.

So, judging with only what I saw, I liked it.
The concept is simple and works well.
The game is a bit too dark for my taste, but that gives a good use to the camera as a makeshift light, especially when wiggling the mouse around.

I would love to see a more complete version, maybe with a variety of interactions or puzzles to summon the entities ?

Really simple but eficient, I think this game has a lot of potential to be expanded into a standalone game.