For many forms of virtual and augmented reality content, a game engine is a key tool for app creation. Game engines are software that provides a pre-made solution to many interactive 3D tasks — rendering graphics to the hardware, handling audio, physics and input, for example. The game engine also provides an Editor environment that allows you to design your XR experience and implement custom behaviors.
There are forms of VR content that don’t rely too heavily on 3D engines — linear 360 videos fall into this category — but in most cases, XR creators will eventually need to gain at least some experience with a game engine.
So which engine is best for XR creators? There are many options, but two really rise to the top: Unity, and Unreal. Both provide tools for creating both AR and VR experiences as well as a large community of creators and learning resources. So, which should you choose?