Well all my other prototypes/demos/games have been mostly just 2D pixel art games with my own artstyle. For this I made a 3D game with heavy use of free assets. This was totally new experience but I wanted to make something in 3D because my current bigger project is 2.5D and I need more experience in 3D to make it work. With this project I learned to do some animations in 3D, use materials way more then before, to use depth/z-dimension and much more.
BTW I really liked your game. Felt snappy and intuitive!