Creating a curved path like a turn in a racetrack

I'm building my own version of Roll-a-ball with a few things to make it look more original. Kind of like Super Monkey Ball, but you need to collect all mandatory blocks before reaching the finish line.

Instead of using a 3D plane in Unity, which is always rectangular, I want to add a curved path. Something like a turn in a racetrack.

How would I do that? It's my impression that I need to use Blender, start out with a cube, remove five of the six sides, move some vertices around, then do a bevel on three vertices to create an approximate but smooth curve. Unity does not have the tool I need to create curves.

 

You should use the Extrude along path system in Blender https://wiki.blender.org/index.php/Doc:2.4/Tutorials/Modeling/Curves/Extrude_Along_Path or use one of the multiple spline options available on the Asset Store for example our MegaShapes asset which allows lofting along splines.

 

Will extrude along path work in the most recent versions of Blender? I'm mostly new to the complicated tools in Blender, and I can get really confused with it.

 

Yes, it is a feature worth learning.