This is done very well. I am impressed that you achieved so much in a 10-day jam period along with all the balancing and polished visuals. I have some feedback regarding the gameplay which would increase the overall experience of the game.
First when you select a room to add buildings to it, it goes away after placing one building. what you could do with that is, since the order doesn't matter, you can have the menu open and allow user to keep adding buildings until they run out of resources or room.
Second we have rituals which kind of seem pointless considering the amount of grind in the game. My opinion is to tweak the rituals where you can cast rituals for buildings instead of rooms, you can decrease the ritual time but it would have a very huge impact and will satisfy the players more upon using the ritual.
Third, you should allow more than 1 research buildings as well as summoning buildings if you plan to add more stuff later in the game.
Other than that you have done a great job, especially balancing the grind and gameplay both for the sweet experience which is not frustrating as well as repetitive.
