The Unreal Engine End User License Agreement is the legal document that governs your use of the Unreal Engine and describes your rights and obligations with respect to the projects you create using the engine.
This license is free to use for learning, and for developing internal projects; it also enables you to distribute many commercial projects without paying any fees to Epic Games, including custom projects delivered to clients, linear content (such as films and television shows) and any product that earns no revenue or whose revenue falls below the royalty threshold.
A 5% royalty is due only if you are distributing an off-the-shelf product that incorporates Unreal Engine code (such as a game) and the lifetime gross revenue from that product exceeds $1 million USD; in this case, the first $1 million remains royalty-exempt. You can find out more about royalties in the Releasing products section of this FAQ.
Download the EULA as a PDF here.
Basic hardware requirements for working with Unreal Engine 5 are unchanged from UE4. However, some of the new features will require higher-end hardware to get best results.
To get the most out of Nanite, Virtual Shadow Maps, and Lumen, we currently recommend the equivalent of an NVIDIA GTX 1080 or AMD VEGA 64 or higher graphics card. To use hardware ray tracing with Lumen, we recommend an NVIDIA RTX 20 series or AMD RX 6000 series graphics card or higher. We also recommend upgrading to the latest drivers for your GPU.
Visit the documentation to view the full system requirements for UE5.
View the Support page for the most comprehensive information regarding how you can get help and information for development with the Unreal Engine.
If you're a custom licensee (meaning you have an Unreal Engine license agreement with Epic other than the standard Unreal Engine EULA), you should ask your questions at the Unreal Developer Network (login required).