empty is an interesting experience. On the one hand the game has different mechanics for you to use and complete the levels, making it non-empty; on the other hand, there is clearly no purpose and no reward for playing it.
Rather than a reflection on the character, I’d see it as a reflection on the player; the player plays for its own sake, not for the achievement of completing the game but rather for the process or the challenge (the latter would apply more if the game was designed to be more difficult).
Interestingly, the game manages to set up some kind of ambiance with so little elements, well done on that front!