Loves it
I had to show KitKat how to use this, but now she plays with it on and off throughout the day for a total of about an hour every day. I never bothered with the original ball, instead hopping straight to the flashing replacements I bought, so I don't know if she'd find it as fun with the non-flashing balls. She likes playing by herself with it, but also if I'm on the other end bombing the ball back to her (we set it up as in the photo, though once she's bored with it, I'll try it in a circle). The only downsides are that it's really difficult to plug the white parts together, and that she gets frustrated after a while because she can't actually get to her "prey". I usually give her a couple of treats while she's playing with it so she feels she gets something out of it, but obviously I can't do that when she's playing with it at night. As to the complaints that the blue top parts breaks off easily, I've had no trouble with that. As long as you clip them in properly (you plug them in then slide them to lock them in place), they seem very solid.