Why my animation doesn't load from blender?

I created a simple cube in blender, that I modified to look like a door, and I just animated it to move from left to right and everything works fine. But when I save it and add it to unity and open it, there is no animation… Please tell me why? Thanks!

You can animate objects without bones with built-in animation tools.

In your case it’s probably because your model is not skinned ie. doesn’t use bones + weighted vertices. I know it’s just a door but game engines rely on bones to process animation efficiently.

@raulGLD
You cannot get your animations out of the .blend file.
You have to export the object with the animation as an fbx file. Blender Animations Unity Import Tutorial - YouTube Be aware that the z axis in blender is up, but in Unity forward, so you might want to fix that.