Cool idea! I like the building part.
I wasn't sure, though, what button to press to confirm my building choice because sometimes I pressed all the buttons and nothing happened, but sometimes I exited the menu and the thing that I wanted to build appeared, and my happiness meter was the same (I guess that's the currency you use).
At first, I didn't understand what was happening at night (your character turned into another one, way shorter and way faster), but I guess that's the dream part.
Also, I find it a little bit annoying that your enemies can attack you from all directions but your attack is limited to 90-degree increments. This part of the game felt unfair.
4 stars!