Bests & Worsts Reviews from Amazon

3.6 stars for how it comes. See below for how to make it 4-5 stars!! Two of my four cats will play with this. The third is not interested at all. The fourth is very interested but can't fit his paws into the holes in the covers to move the ball around the track. I have four American domestic short hair cats. Two are part Siamese and are movers and two that are stationary players and much harder to get moving. I have the original catit play circuit (no raised hills) and the speed circuit. (Had raised hills) (both from the blue "previous generation") There are very few differences between the two that I have noticed. The track is longer than the previous offerings. (If only buying one set) However, there are many improvements that I wish were already fixed with this "2.0 model". I will list some pros and cons to possibly help guide your purchase. Pros: -The green covers lock into place (by sliding ahead) There is an illustration showing which way to slide on the covers on the covers themselves. -Toy should interest cats who like stationary play and who already like similar ball on track toys like the Bergan Turbo Track or Chaser or the Petstages catnip chase toy. -The toy is part of the 2.0 line and will be a very nice border for possible play at the outside of the other 2.0 items if you have purchased or are interested in those. -Stationary ball track toys are very good toys to get cats who are stationary players or that may be overweight moving, because they sit and play with the toy but then when the ball goes out of reach they may be motivated to move to keep it in motion. The toy can also occupy your cats when you are unable to play with them. -The box is very pretty and has instructions on it for creating a treat puzzle box with a little cutting and bending. Cons: - The toy didn't come with any instructions or layout samples to help put the toy together. The only "instructions" are hard to understand pictures in a small corner of the box. -The holes in the green covers and in between the covers that are supposed to send the ball around the track with a paw swipe may be too small for your cat's paw to fit in especially if you have large males or large breed cats. The manufacturer should have two size options on the covers for small and large cats. - The hills on the super circuit and wave circuits are a little steep (especially for such a heavy ball) for the average cat to get the ball going on. The ball will crest the hill but then roll back down most times and your cat may walk away frustrated. -The ball is heavy and requires a lot of force to get moving around the track. -The pieces slide together and if not completely aligned there will be a ridge in between the pieces that the ball can get stuck on. I might try replacing the ball that it comes with with a more lightweight ball such as a ping pong ball to see if my cats can get it to move a little more and therefore be more interested and less frustrated. I would still recommend this toy if you have multiple cats or a cat who likes to "sit and play" with similar toys but probably the regular play circuit and not the one with the hills unless some improvements are made. UPDATE: 5 stars if you add two ping pong balls to the track instead of the ball it comes with! All 4 of my cats now play with it and for a long time! The ping pong balls are a lot more lightweight and easier for the cats to get over the hills and will even go around the track with a "halfway hit" if you have the problem of your cat not being able to get their paws in the openings. Also be sure all the pieces are aligned by pushing down on the edges of the white track in the openings between the covers. Also be sure you locked your covers or they'll come off.