The pixel art is very nice and neat. It fits perfectly with the game play. It is very clever to make the player wait for the hand animation to finish before firing the next rubber band. It prevented player from spamming the game. But I found the control system not registering the firing action when I press Spacebar straight after the animation finish. There is few second waiting gap if the player wants fire rubber band rapidly. Also, I need to press the blue play button twice to bring up the "Resume Game?" page for the first time in a new attempt and afterwards it works fine.
Overall the design and the game play is quite fun!