This is a lot of fun for my 5 year old granddaughter; even the 12 year old sat and played with her and adults enjoyed watching all the creative fun. The youngest one discovered she can place the ZhuZhu pets at the bottom of the spiral where you would expect them to come down; she started them in reverse and they CLIMBED UP the spiral and went back down into their swimming pool. They only become jammed when going UP but, did not get jammed going down. When they climb up the ramp and you open the tops to unjam them, one actually coasted backwards and rose up on his rear wheels--this brought us a huge laugh instead of the annoyance expressed by another reviewer. Common sense is all we used for assembly; didn't even look at the instructions--just look at the picture of the end-product and go from there. I wouldn't expect a young child to assemble these toys--parental help is part of being a parent and including the child is part of the educational experience for the child. I'd suggest if some parents are assembly-impaired, ZhuZhu could put numbers and arrows on the items to guide you. Personally, we had no issues except the ramp comes apart on occasion. Once it is assembled I would suggest a properly placed small strip of duct tape at the bottom where the hinge is located, would stop any issues we've had with the ramp coming apart. It holds together nicely except when the kids put too much pressure on the plastic pieces to close the top cover. I told them to leave it open when they are playing. That eliminated the "fall-apart" issues with the ramp until we could get access at home to tape. We've all, ages 5-66, had hours of enjoyment watching, photographing and video taping the non-stop fun. The young one now has FIVE ZhuZhu pets and loves lining them up like a choo-choo train on the spiral ramp when she takes a rest to color or watch a movie. Her ZhuZhu's have become like her little children; one is never far away from her. One usually has to go everywhere with her in a carrier; she asked to take two! When she was riding back 300 miles to her home after receiving these gifts, the house was beside her on the seat with all five running around beside her car seat. She wanted to sit with her ZhuZhu pets instead of with her sister. ZhuZhu could make a little carry tote bag or "purse" with pockets for these pets. I think that would be a hit with the kids. The tote bag could be for boys and a "purse" for the girls.