What Is Ultimate Lobby System?
Ultimate Lobby System is a high-performance, fully replicated, and Blueprint-friendly lobby framework designed for Unreal Engine.
It provides a complete AAA-quality multiplayer lobby experience including slot management, ready system, waiting queue logic, host start countdown, fade screen transitions, kick support, and a built-in optimized chat system — all with a clean C++ architecture and full Blueprint control.
Lightweight, modular, optimized — perfect for any UE multiplayer project.
Supports both Listen Server & Dedicated Server.
100% multiplayer ready replication.
🎮 Example Demo - Try it, before you buy it!
💨 Example Project - It will make the setup feel like a breeze
📚 Documentation - Discover how it functions
💬 Discord - Feel free to drop by and ask questions
Note: Heavy operations are handled in C++, while lightweight logic and visual operations are processed through Blueprints.
✨ Created to simplify complex lobby systems while keeping full control in your hands.
Ultimate Lobby System takes your game's multiplayer flow to the next level.
Designed for modern Unreal Engine projects, it delivers a complete and scalable solution for building professional multiplayer lobbies.
Automatically assign players into lobby slots, sync player info and ready states, manage waiting players when the lobby is full, start games with a synchronized countdown, display fade screens before travel, broadcast join/leave messages, and even run a fully replicated chat system — all with minimal setup and maximum performance.
Unlike basic lobby setups, this system is fully server-authoritative and built for real multiplayer production use.
🛠️ Features
Easy to use, modular, and fully customizable lobby framework
Fully server-authoritative lobby logic (production-ready replication)
Automatic player slot assignment system
Supports Primary Slot (Host slot / main seat)
Smart slot distribution (nearest free slot selection)
Fully replicated player info system (PlayerName + UniqueID support)
Ready / Not Ready system with instant UI update events
Late-join safe sync (ready states and player info update correctly)
Built-in Waiting Queue System when lobby slots are full
FIFO waiting list logic (auto-fills empty slots when players leave)
Full sync + incremental sync support for waiting players list
Host Start Game system with countdown support
Countdown tick replication to all players (UI-friendly)
Optional Fade Screen system before ServerTravel
ServerTravel system with ?listen support
Join/Leave broadcast message events (PostLogin / Logout messages)
Kick system support with optional kick popup message
Kick message persistence using LocalPlayerSubsystem (safe travel messaging)
💬 Built-in Multiplayer Chat System
Fully replicated server-authoritative chat component
Supports Global Chat
Supports Nearby Chat (distance-based filtering)
Supports Team Chat (TeamID filtering)
Optimized widget pooling system (no widget spam / no performance drops)
Automatic message cleanup and reuse system
Blueprint-driven chat UI workflow (easy to customize)
Clean and scalable architecture for large lobbies
⚡ Performance Focused
Event-driven structure (minimal tick usage)
Optimized replication flow
No unnecessary RPC spam
Low CPU overhead even with many players
UI widget pooling system to prevent heavy allocations
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