Is there a Game Rig that includes a Facial bones?

[ermelious]

I would like to have Facial bones in my character's rig, I'm wondering if the blender version of this plugin includes something like this that will work with Unity and Mixamo? I've already tried testing it out but so far, only the Game Engine and Mixamo rig options worked with no issues. The rest of them seemed to have issues with the fingers etc.

If there's no option for this, is it possible to combine the Default Rig (Transfer the face bones over to the Mixamo rig?)