3D curves? Do they exist?

I’m trying to model some hair for a game and the tutorial on the blender site for making hair is very…not for games, as he doesn’t seem to give a flip about poly count. Nor is it very precise.

So I thought, curves would be the best way to map out the flow of the various locks of hair. Unfortunately, curves only seem to work in two dimensions. Say, if I want a curve to go right, down, then curve back, that doesn’t seem to be possible.

Am I missing something? Cause I think I’m on the right track for mapping out hair, but this is really putting the brakes on moving forward.

You can change between 2D and 3D curves in the curve properties panel.

Wow. Thanks. Easy peasy.