There's a lot of ways to expand this.
- As far as I could tell, the spiky balls were the only things that could be resized. You could make so many more elements resizable.
- It was also not totally clear what the goal was, which I know might sound a little weird because you did put a giant "GOAL" sign in the middle of the map, but I wasn't sure where the sign was pointing to since it was right above the starting area.
- There were a lot of collectibles (coins, diamonds), but it wasn't clear if they had anything to do with the goal.
- The audio was also peaking really badly. I had to put it on mute. I'm not sure if that was just an issue with my computer or not.
Overall, I think you've got a good core concept and starting point. Great start!