Haven't had the game for too long, but it is worth the 30 bucks i paid for it.
Some POV's of my rides and other rides
This is frostbite, it has extensive 3ds scenery and a newton style track.
This is Colder Fusion, I didn't make it, but it is still worthy of placing on this list.
This is Gaia, another one that I didn't make, but in my oppinion, it is probably the best coaster of all of them.
You can download a demo that comes with 5 rides, and you can't save your own designs, but you can get used to the editor using the demo.
Click "Downloads" on the left