Can not import Blender animation into Unity I am relatively new to Blender and Unity. Please help me understand what do I do wrong. I try to have a simple curve animation imported into Unity. Idea is that curve grows along his path and then turns back. Here is that animation in Blender: https://www.screencast.com/t/t9FedC1Jh I achieved that by making keyframes for Bevel Factor property of a curve.

BUT, I can not import this animation into Unity. I want to have that curve as an object in Unity that animates repeatedly.

When I import .blender file into unity I have some "Default Take" animation but it does nothing. When I export Blender project into .fbx - there is no animation there at all. See here: https://www.screencast.com/t/0NMko6TGFoxy

Please point me into right direction - how can I import that object into Unity correctly? Thank you in advance!
Unity uses Blender's FBX export functionality to throw your model over the wall to Unity.  The FBX file spec only allows for Meshes (and derivatives thereof, such as bones and bone weights), Animations of Meshes, Materials, and Textures, and Blender's FBX implementation is incomplete.  Right now, there is no way to export bezier animations directly.

You could, theoretically, export your animations by binding your animation to an armature, exporting the armature to Unity through FBX, and using a plugin like Bezier Mesh to render the curve and parenting it's controls to your imported mesh.  This is pure speculation on my part, though.