Build a polished RPG inventory without rebuilding the fundamentals. RPG Inventory & Bag System: Plug & Play is a standalone Unreal Engine 5.8 code plugin that creates a working player inventory automatically while exposing the C++ and Blueprint boundaries needed for a production game.

Copy the plugin into your project, enable it, and press Play. The first local player receives a 30-slot inventory and can open it with I or B. No other Black Iron Spine product or third-party plugin is required.

INVENTORY FEATURES

• Plug-and-play automatic startup with an optional explicit Blueprint start path

• Persistent item stacks, currency, equipped bags, window placement, and presentation settings

• Drag-and-drop moving, swapping, merging, Shift-drag stack splitting, and exact quantity splitting

• Capacity and stale-source safety checks

• Case-insensitive search across names, IDs, descriptions, and designer tags

• Category filtering and sorting by name, category, rarity, weight, or value

• Keyboard, mouse, and controller navigation and item actions

• Item-use requests for project-owned healing, equipment, crafting, quest, and ability logic

• Blueprint item definitions, reusable Data Assets, tags, metadata, and custom item actions

BAGS AND CAPACITY

• Five equipment sockets for capacity-granting bags

• Additive storage bonuses with a documented 120-slot cap

• Capacity-safe bag removal that refuses to discard stored items

• Expandable or collapsed bag rail with persistent presentation settings

• Included Vintage Leather Backpack example with a +10-slot bonus

INTEGRATED 3D INSPECTION

• Select an item to inspect its 3D model inside the inventory window

• Drag to rotate and scroll to zoom

• Saved 3D-view preference; hiding inspection reclaims the complete right column

• Included inspection-ready examples for the Health Potion, Ancient Key, Vintage Leather Backpack, Silverblade, and Cobalt Shard

PRESENTATION CONTROLS

• Normal, Compact, and Wide layout presets

• Adjustable window scale, slot size, grid columns, slot spacing, glass, backdrop, slot, and border presentation

• Persistent appearance settings with Reset Appearance and Center Window controls

• BIS black-iron visual styling, launcher, information panel, tooltips, and currency presentation

INCLUDED

• Five inspection-ready 3D models: Health Potion, Ancient Key, Vintage Leather Backpack, Silverblade, and Cobalt Shard

• Four starter item definitions and one expandable-bag definition

• 40 Unreal content assets, including icons, materials, textures, meshes, render targets, and UI resources

• Editable source PNGs for the included starter icons

• Human-readable C++ source and Blueprint APIs

• Buyer Setup, Architecture, Customization and Compatibility, Inventory Polish, Local Commerce Integration, Content Manifest, and Changelog documentation

NOT INCLUDED

• Additional items shown in the BIS UI integration showcase beyond the five inspection-ready models listed above

• The BIS UI host project, forest environment, scenery, or showcase character

• Loot, Vendors & Economy, Action Bar Kit, or any other Black Iron Spine Studios product

• Combat effects, character statistics, crafting recipes, loot generation, quests, multiplayer replication authority, or a persistent online economy

Inventory Kit works by itself. When a compatible Loot, Vendors & Economy installation is also present, the products can discover one another through a dependency-neutral runtime boundary. Inventory remains authoritative for player items and bags; commerce remains owned by LVE. No companion product is required for standalone use.

The systems listed under NOT INCLUDED remain project-owned and connect through the included events and APIs where applicable.

The fantasy character and armory background used in the promotional thumbnail are presentation art and are not included. The inventory interface, item icons, inspection models, bag system, and demonstrated functionality are captured from the working product. Selected example meshes and promotional art were created with generative tools.

TECHNICAL INFORMATION

• One Runtime module: InventoryKit

• Full human-readable C++ source included

• 40 .uasset content files

• Blueprint functions, events, item definitions, and Data Assets

• Keyboard, mouse, and controller input

• 30 initial slots, 120-slot supported maximum, and five bag sockets

• Save schema 15

• No bundled audio; optional sound hooks default to no assigned sound

• No third-party code or required plugin dependencies

• Optional Loot, Vendors & Economy interoperability through runtime discovery

• Unreal Engine 5.8 / Win64

Black Iron Spine — the backbone of your games. Get Your BIS.

Version 1.0 is the initial release. Continued 1.x maintenance and compatibility improvements are planned without a fixed delivery schedule.

Public buyer guide: Official BIS buyer guide

SUPPORT & REFUNDS

Questions or technical issues: [email protected]. Purchases and refund requests are handled through Fab under its refund policy.

STUDIO WEBSITE

Explore Black Iron Spine Studios: Official studio website