[solved] to balls that hit each other but then you click attack to win.

[Alblaka]

But this state 3006-ball will crash through everything and will damage all enemys in a row...

I would recommend Ruduen's idea:
Pressing A makes you spawning the balls faster. Therefore, you have at the opoint-frame a wait: 3 and next: xy and a hit_a: xy
Then it would look, like the one ray would push the other one away...

And you could do some itr:8-works to add additional light effects if one ball gets hit by another. Then it wwould look more like an Energy Duel...