The game had a really fun introduction, but it seemed to hit a difficulty spike quite rapidly. As a person that deals with anger management issues, that had a major impact on my personal experience.
The first two levels went without a problem, I got 3 stars in both of them. However, after crossing the bridge I was only ever able to get a single star, and none on level 6. I'm not sure if the requirements were too high, if my skill was not good enough, or if the sheep were too difficult to control.
On that note, the sheep felt pretty erratic. It's hard to make them turn where you want them to, even when you're right on their side. Barking often just made things worse, scattering the herd all over the place, and making the sheep run faster than you. Even going slow was not helping enough.
Small gates were a massive hurdle, pun intended. Having two sheep clear the gap and one get stuck on the fence was a very common problem. There was no easy way to make the stray sheep turn around and try going through the gate again, and it would often scare the other two sheep into a bad position. Perhaps the gates need to be wider, or come later in the game.
One thing that would really improve the experience is to add a "Restart" button. Right now there's no way out of a level outside of completing it. It makes it frustrating when you're trying to get a star you missed, but you already messed up too much. I didn't make it past level 7 because of it.
I noticed a strange performance bug when I replayed level 6. The game seemed to lag quite noticeably. However, when I finished rounding up the sheep the lag vanished. It returned when I started level 7. If I had to guess, perhaps there was a memory leak with the sheep or the dog?
The few sounds I herd were nice and fitting, the menu car was fun despite controlling a little odd, and I liked the art style. The Sheep Facts were also an awesome touch. Now I know there's over 1000 different sheep, and they all have their own accents!