The gameplay is pretty fun! Premise is cool too, love the creativity!
Didn't fully make sense how some stuff effects you but so long as you're jumping you can be in full moonlight? But then again you can roll right into and through an axe swing in Dark Souls and still come out unscathed so maybe I shouldn't apply logic to video games.
The jumping is fun and does break away from otherwise sticking to the shadows and following along them.
I really enjoyed the creative ways that shadows were cast in the game, the flag raising and lowering being my favorite, very cool visual.
If you were to expand upon the game later, I think it'd be really cool to add ways for the player to interact with the environment, and get stuff to show up and cast shadows that wouldn't otherwise be there.
For it's current state it's pretty enjoyable as is!