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> Making Interactive Experiences > Networking and Multiplayer > Iris Replication System

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You can try out this Experimental feature, but we do not recommend shipping projects with it.

Features are sometimes made available in an Experimental state so you can try them out, provide feedback, and see what we are planning. We do not recommend shipping projects with Experimental features. Please keep in mind that we do not guarantee backward compatibility for assets created at the experimental stage, the APIs for these features are subject to change, and we may remove entire Experimental features or specific functionality at our discretion.

Iris Replication System

Learn about Iris for network replication in Unreal Engine.

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Introduction to Iris

Iris is an opt-in replication system that works alongside Unreal Engine's existing replication system. Iris builds on Epic's experience with Fortnite Battle Royale to create a replication system that supports:

Larger, more interactive worlds.
Higher player counts.
Lower server costs.

If you are creating a networked multiplayer game in Unreal Engine, you can choose to use the existing replication system or the Iris replication system. For more information about replication systems in Unreal Engine, see:

Programming Multiplayer Games to learn about the existing replication system.
Iris Replication System to learn about the Iris replication system.

Introduction to Iris

The introduction to Iris provides you with an:

Overview of the design.
Explanation of concepts and components.
Operational flow between gameplay code and Iris.

Introduction to Iris

Learn about the design and components of Iris as well as how to configure your project to use Iris.