Unreal Engine 5 Tutorial - Online Multiplayer Lobby Part 3: Copy Details

Ryan Laley
Ryan LaleyMay 12, 2026

Why It Matters

Accurate nickname replication ensures consistent player identity across lobby and gameplay, a core requirement for professional multiplayer titles.

Key Takeaways

  • Replicate player nickname using server RPC and RepNotify
  • Convert client-side SetNickname to a custom server event
  • Bind UI widget to PlayerInfoChanged dispatcher for live updates
  • Test changes in standalone lobby; names sync across clients
  • Next episode will cover struct-based loadout replication for multiplayer

Summary

The video walks developers through adding true network replication to a player’s nickname in an Unreal Engine 5 online lobby, extending the previous tutorial that only copied the value locally.

It shows that the nickname variable must be marked Replicated and that the client‑side SetNickname call needs to be split into a custom server RPC. By adding RepNotify, a OnRep_Nickname function fires on every client, where an event dispatcher (PlayerInfoChanged) is invoked to refresh UI elements.

The presenter demonstrates the workflow by renaming two players—Ryan and Jade—and confirming that both the lobby list and the in‑game state display the names on server and client consoles. He also highlights the need to repeat the same server‑RPC pattern in the shooter’s player state to propagate names across level transitions.

This pattern provides a reliable blueprint for synchronizing any player‑specific data, reducing desynchronization bugs and enabling richer multiplayer experiences. The next episode will build on this foundation by transmitting load‑out information via structs.

Original Description

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