A lean C++ Experience framework for Unreal Engine 5 — Game Feature Plugin loading, primary-asset modes, and a predictable startup pipeline without a full Lyra stack.

Built for projects that want Lyra-style Experiences (data-driven game modes, GFP composition, GameFeatureActions) with a small runtime: strategy games, RPGs, city builders, and any title where maps or sessions swap modular content at load time. The plugin owns Experience resolution, GFP load/teardown, asset bundles, and load progress; you own mode data in Primary Data Assets and content in Game Feature Plugins.

Key Features

Experience Definition — USGCExperienceDefinition (Primary Asset) lists Game Feature Plugins to enable, instanced UGameFeatureAction hooks, and reusable USGCExperienceActionSet assets for shared GFP/Action bundles.

Experience Manager — USGCExperienceManagerComponent on GameState loads the Experience asset, activates GFP, runs Actions, and broadcasts OnExperienceLoaded / OnExperienceLoadFailed. Fail-fast on GFP errors; configurable load-status progress weights.

Multiplayer — Server assigns Experience and replicates ReplicatedExperienceId; clients run the same load pipeline locally when the id arrives.

Game Mode Resolution — ASGCGameModeBase resolves Experience from URL (?Experience=), ASGCWorldSettings per-map default, or USGCGameData global fallback via USGCProjectSettings.

Game Data & Asset Manager — USGCGameData primary asset for project defaults; USGCAssetManager loads GameData at startup and supports runtime primary-asset registration.

Blueprint Async — Wait For Experience Ready and Experience Load Status nodes for menus, loading screens, and gameplay gates.

Project Settings — GameData asset, bundle name, load-progress weights, and editor option to keep GFP Registered after PIE (faster iteration).

Architecture

Two modules — SGCExperienceRuntime (game) + SGCExperienceEditor (scan-rule merge for SGC Asset Manager, DataTable toolbar utility).

C++ core, Blueprint configuration — Pipeline and subsystems in C++; Experience assets, GFP, and Actions in editor assets.

No plugin content — Bring your own Experience definitions, GameData, Game Feature Plugins under Plugins/GameFeatures/, and map World Settings.

Requires Game Features, Modular Gameplay, and Data Registry (Data Registry via standard UGameFeatureAction_DataRegistrySource in GFP).

Blueprint-Friendly — Typical setup: create Experience + GameData assets, assign USGCAssetManager and GameData in Project Settings, set World Settings or URL Experience on travel, wait on Experience Ready from Blueprint.

Attention: Sample Experiences, GFP packs, and maps are not included. You provide Primary Assets (SGCExperienceDefinition, SGCGameData) and enable matching PrimaryAssetTypesToScan when using USGCAssetManager.