Game rail in many variants

Did this game rail for my two young cats (7 & 8 months) and bought it is actually used every day, even if it is a little demotivated nudges. You can build the track in many variants, it is very stable through the rubber Opole on the ground and the mounting of the individual parts budge. I have also bought the illuminated balls to set up and the rail while in a circle and my cats love it. Most it makes them and I like when we play along with the track to see who can nudge the ball more. =)