Urho3d seems like it's a new engine, it seems like it's pretty good. Ogre3D is mentioned, but it's not as easy to use as it was, the doc seems poor, there are

Urho3d seems like it's a new engine, it seems like it's pretty good. Ogre3D is mentioned, but it's not as easy to use as it was, the doc seems poor, there are 2 versions of the engine (although it's a normal thing nowadays), so it seems the engine is dying.