Royalty-based
If you're creating a game or application that relies on engine code at runtime and will be licensed to third party end users, you'll pay royalties and won't be required to purchase seats.
Cost
All lifetime gross revenue above $1M that is directly attributable to the UE product, regardless of who collects it, will be subject to a 5% royalty. Revenues generated from sales in the Epic Games Store are royalty-free.
Download Unreal Engine
Once you ship your game or other application, please submit the Release Notification Form. After that, report your royalties each quarter.