Very cool game, I like how the Main Menu complements the controls, also subtly teaching the player the premise of the game without explicitly telling them, very cool.
One thing I would add is a visual indicator to show that you can interact with a prop (like the hex highlighting a bright color along with a sound). I almost missed the treasure chest since it looked like a prop! Adding in visual/sound indicators like that is always a good thing.
Hexagons are the Bestagons