WorldPlane is a hosted MMO server backend for Unreal Engine 5.8, built for seamless worlds that run across connected dedicated servers. This free companion plugin gives developers an offline way to review their project's multiplayer setup and explore readiness for WorldPlane integration.
Build a seamless multiplayer world with WorldPlaneWorldPlane runs a game zone across multiple dedicated servers while presenting one connected world to players. It is designed for developers building MMOs, persistent online worlds and other large multiplayer games who want hosted server infrastructure and tools for operating their worlds.
Seamless server handoffs: move players and NPCs between server-owned areas without a loading screen, respawn or reconnect at each border.
Adaptive server allocation: add and drain dedicated servers as players gather and disperse, within the zone budget you configure.
A single connection address: players join through one gateway while WorldPlane routes them to the servers responsible for their surroundings.
Hosted deployment tools: upload game server builds and manage environments through the studio panel, API or command-line tools.
Atlas live world monitoring: inspect players, NPCs, server ownership and handoffs on a browser-based world map, with history replay for investigation.
Keep your own game services: integrate with your existing player accounts, database and backend services. Empty zones can sleep and be woken by your launcher or login service.
WorldPlane integrates through an Unreal plugin built on Iris replication and Unreal's multi-server foundation. The hosted service is in early access and is available separately by subscription, with server usage charges. Hosting, the WorldPlane runtime SDK and gateway are not included in this free Fab download.
Discover WorldPlane, see how the service works and review current plans at worldplane.net.
Included free: Multiplayer DiagnosticsRun a static diagnostic scan from the Multiplayer Diagnostics button in your Unreal Editor toolbar. Review C++ source, configuration and Blueprint findings in a dockable panel, filter by severity, inspect the evidence and jump to the affected source file, asset or graph node when available.
The default Unreal Multiplayer profile works independently of WorldPlane. Optional WorldPlane Readiness checks help identify integration work when you are considering the hosted service. Supported C++ and configuration repairs have a readable preview before application, with local recovery copies and a rescan afterward. Blueprint repairs remain manual, with guidance and navigation.
The diagnostics plugin works offline without an account, subscription, WorldPlane SDK, CLI or Rust installation. Scans start no servers and upload no project data.
Compatibility and scopeUnreal Engine 5.8; Windows x64 editor only. One editor module; no game runtime module.
General checks cover selected Unreal/Iris source and configuration patterns and Blueprint replication defaults. Iris-specific checks apply only when Iris is enabled.
WorldPlane readiness checks are optional. WorldPlane-specific automatic repairs require the relevant SDK to be installed.
Static findings are review guidance, not a server benchmark, performance prediction or guarantee of multiplayer correctness.
Maps and gameplay are not run or inspected. Reports show skipped inputs and coverage limits. Automatic text repairs support UTF-8.
Website: https://worldplane.net
Support: https://worldplane.net/support