Here is my controllable drone design for the Blender Game Engine. I modeled, textured and rigged this drone in Blender 27.09.2014.

You only need your mouse to control this drone in the BGE.
Also, I made a Python Script which controls the sound, the force and the rotor movement of the drone with only one property value.

Available formats

Blender (.blend)
3D Studio (.3ds)
Alembic (.abc)
Collada (.dae)
DXF (.dxf)
Autodesk FBX (.fbx)
MilkShape 3D (.ms3d)
Alias/WaveFront Material (.mtl)
OBJ (.obj)
Agisoft Photoscan (.ply)
Stereolithography (.stl)
VRML (.wrl, .wrz)
DirectX (.X)
X3D (.x3d)