Hi, I like how simple and entertaining it is, the visual design is good too.
Things that I think would improve the experience:
- Some indication on the pins to indicate that they are no longer dangerous once they collided, like a flashing color.
- A clock indicating the time remaining for the pins to spawn.
- That the pins don't interfere with each other while following you, or that they can collide with each other if they get too close.