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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 generic replication system.
- Iris Replication System to learn about the Iris replication system.