This is a fun concept. I don’t think I have fully understood it, yet. The sign posts are a great idea to not get lost but it feels a bit strange that you can place them in the air.
At first, I was wondering why the character is sometimes out of screen until I realized that I could control the view with my mouse. (I had it out of the screen…)
Also the physics can be improved: Sometimes, it’s difficult to get through holes in the ground. I guess the collision shape of the character is too big. I also got almost stuck somewhere where I could only go down. But fortunately there was a way back.
Otherwise, I really like your game. It is definitely one of the more creative platformers in this game jam.