Use game engine for animation? It looks feasible soon. The new Cinemachine component that’s coming to Unity’s 2017.1 release promises to allow that: directorial and cinematography powers.
Unity’s Asset Store is full of free 3D models and environments — including the hugely impressive Adam character.
Unity is adding a timeline view: Your entire game or animation can sit on multiple layered timelines with triggered or timed events.
Cinemachine automates a ton of camera parameters to give you a more realistic and atmospheric presentation. There is also cinema-quality post-processing live inside a game engine.
The appeal of Unity as an animation engine is in its combination of high-quality graphics with instant playback and review