Really cool game. The fact that the blue balls win is kinda lame though.
This could be changed by tweaking the numbers and making the turrets stick to their initial targets. This could lead to cool strategies where tankier balls tank shots and quick ones slip by in that window. Also the slowing guns retargeting leads to all of the balls get grouped no matter how quickly or slowly you deploy them, which could bring additional depth (for example you deploy slowly to avoid AOE damage).