What are some alternatives?
When comparing Unity and Blender, you can also consider the following products
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
GameMaker - "With GameMaker, I went from no programming knowledge to full-time developer in 2 years!" Seth Coster - Butterscotch Shenanigans - Crashlands. "GMS 2 is absolutely amazing and I cannot get over how great this software is to use".
Keyshot - KeyShot 3D rendering and animation software is the fastest, easiest way to create amazing, photographic visuals of your 3D models. Enter your search in the box aboveTryYour download of KeyShot is only moments away.
CryENGINE - The most powerful game development platform is now available to everyone. Full engine source code.
ZBrush - ZBrush is a digital sculpting and painting software solution.