The Ultimate Multiplayer Inventory Framework (UMI) is a production-ready, modular inventory solution built for Unreal Engine 5. Stop wrestling with replication logic and start shipping your game.
What's Included
Replicated Inventory — Fully networked inventory system with authoritative server logic
Equipment System — Modular equip/unequip with slot management
Containers & Loot — Chest, drop, and loot table support out of the box
Interaction Support — Built-in interaction framework for pickups and world items
Crafting-Ready Architecture — Extensible data structures designed for crafting systems
Who Is This For?
Indie developers and studios building multiplayer games in UE5 who need a reliable, scalable inventory foundation without building from scratch.
⚔️ Multiplayer First
Fully replicated inventory systems
Server-authoritative item handling
Dedicated server support
Multiplayer-safe item instances
Optimized replication workflows
LAN / Listen Server / Steam ready
🛠️ Blueprint Friendly — Powered by C++
Blueprint-first workflows
No C++ knowledge required
Blueprint events & interfaces
Data Asset driven systems
Gameplay Tag integration
Optional C++ extensibility
💾 Production-Grade Persistence Framework
UMI includes a scalable multiplayer persistence framework designed for long-term projects and dedicated server environments. The system supports asynchronous save workflows, stable GUID-based object persistence, unique item instance serialization, modular save buckets, autosave support, and plugin-friendly save integration — allowing inventories, equipment, containers, and world data to persist independently without relying on monolithic save files.
