This roller coaster is awsome!!!!!! I got it for christmas and couldn't wait to put together so I did it boxing day at my grandpa's house. I had to take it apart to go home but it is now set up in my room. The first time it took me 6 or 7 hours (about) to put it together but the second time it only took me 4 or 5 hours. The turbo boosters work great and the loop de loop is really cool. If you don't like the first layout go to knex.com and you can find two others. The only downfall is after awhile your fingers start to hurt from snapping together pieces!! Great toy!!!!!!

It takes about 6 hours to put together this roller coaster, and it's worth it. Once we completed it and we turned it on for the first time my three kids (6 yrs, 3.5 yrs, and 20 months) just started giggling because the coaster gets propelled through the launchers so quickly. When it takes off going straight up you can hardly see it.

After a week or so of using it intermittently -- perhaps about 20 minutes per day -- the car is slowing down noticeably (i.e. the batteries are wearing down) but it's still making it all the way around the track. I would guess in the next few days the batteries will need to be replaced.

If you like K'Nex or if you just like building things you'll really enjoy this roller coaster. It's fun to build and it's fun to watch when you're done. Clearly this isn't intended for little kids to build by themselves, but young kids can certainly help out on a lot of the assembly. Sorting all the pieces before assembly is also a great exercise for younger kids.

This is an awesome toy to see on display at the store, or set up at someone else's house. Here's what you have to look forward to if you brave it on your own: around 69 pages of assembly instructions, some requiring very particular placement. After hours (and hours and hours, depending on how long you can go at a time) of assembly, you will have a three foot by seven foot by five foot high roller coaster. Turn it on and watch the car fly around the track. Ok, that was fun for 10 minutes (or longer, depending on age and availability of other entertainment), so now what do you do with it? Take it apart and spend another half dozen hours putting it together the next time you want to watch the coaster run around for 10 minutes? Leave it on permanent display (if you can spare the space)? Take it apart and put it in the closet never to be seen again?

As I said, a nice toy to look at, but the time investment required is NOT worth the payoff - there are better construction sets out there that allow for more creativity, take up less space, and do not require the investment of hours of time for minutes of fun. Your mileage may vary...

I got this kit as a gift and I put it together in 3 days with my dad's help! I give it two thumbs up!

I got this for christmas and as soon as I saw it I opened it. I was so exited that I built it in about 2 hours.