Unreal Engine is free to use. We offer a choice of licensing terms depending on your use of Unreal Engine. Unreal Engine End User License Agreement for Publishing: This license is free to use; a 5% royalty is due only when you monetize your game or other interactive off-the-shelf product and your gross revenues from that product exceed $1,000,000 USD. Metal is a low-level, low-overhead hardware-accelerated 3D graphic and compute shader application programming interface (API) developed by Apple Inc., and which debuted in iOS 8.Metal combines functions similar to OpenGL and OpenCL under one API. It is intended to improve performance by offering low-level access to the GPU hardware for apps on iOS, iPadOS, macOS, and tvOS. Details what Datasmith features work on what different platforms.

This page describes what features of Datasmith work on what different platforms when you download Unreal Engine through the Epic Games Launcher and when you build the engine yourself from its source code distribution.

Supported File Formats by Platform

Some components used internally by the different Datasmith importers only work on selected Unreal Engine platforms.

Source format	64-bit Windows	Mac OS X	Linux
Unreal Engine 4 Mac Os X Some components used internally by the Datasmith importers are not redistributable as part of the Unreal Engine source code. Therefore, you can't rebuild Unreal Engine yourself with support for the features provided by these components. When you rebuild Unreal Engine yourself from its source code distribution, the Datasmith import plugins support the following formats: Source format Rebuildable? Source application 64-bit Windows Mac OS X