I really enjoyed the atmosphere and the 2D visuals, they fit the king simulator concept very well.
One thing that stood out to me was the contrast of the buttons on the title screen and the white “go to bed” text. Placing the text inside a dialogue box or adding a shadow could make it easier to read.
The music also creates a nice sense of tension, but having audio makes a volume control important, even if it is just included in a simple pause menu.
Congratulations on the great work!