Coupons random bonus of clicks on each level

[Galaxian]

You should do something like this:

Level 1
Get 1000 free points
Requires: 500 clicks

**Gray button that can't be clicked until they get 500 clicks**
**The gray button turns into green when they get 500 clicks*

When they click on the green button the system adds 1000 points to their account, no coupon code.

And then comes Level 2.