bogdan666 wrote:One important question still remains: Does this work with Unreal Engine or Unity3d or is it only meant for use with blender?
I spent a few minutes with Google trying to find out if either game engine has an equivalent of Blender's mesh deform modifier, and failed to find anything. It's a bit tough because the words are used in so many related contexts so I could easily have missed something among all the irrelevant search results.
One possibility would be creating a shape key from the difference in the armature controlled mesh and the mesh deform controlled mesh as a sort of shortcut to manually creating shape keys for armature-based movements. Which might work for predefined movements anyway.