Advanced: Aimbooster

In this animation you copy AimBooster.com, but simplified so you can make it with what you know from Chapter 20.

• A single circle is at a random place.
• Radius increases.
• Clicking on the circle gives you points inversely proportional to the radius (maybe 100/radius).
• When the circle is hit, it disappears and another starts growing.
• When the circle reaches a certain radius it disappears.
• After missing three circles, the game is over.