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Development Preview (0.x): PGX is open for architecture and API evaluation while development continues. Breaking changes are possible and the current preview is not recommended for production projects.

PGX is a set of C++ plugins for Unreal Engine 5. It extends Unreal subsystems, Data Assets, Gameplay Tags, Blueprint APIs and editor tooling without replacing the engine's native models.

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Version and engine paths

• PGX v0.1.1 · Unreal Engine 5.7.4 — versions/pgx-v0.1.1/ue-5.7.4/, patch-precise and fully validated.
• PGX v0.1.0 · Unreal Engine 5.6 — versions/pgx-v0.1.0/ue-5.6/, minor-version precision; no exact 5.6 patch was recorded.

Included in v0.1.1

The v0.1.1 Development Preview contains 26 plugins and 48 modules in one compatible constellation. It lives under versions/pgx-v0.1.1/ue-5.7.4/ on the single release branch.

• Foundation: PGXCore.
• Established preview systems: Audio, Game Flow, Loading, MGOS, PSO and Save.
• Functional previews: Ability, Crafting, Input, Interaction, Inventory, Spawn and Trade.
• Structured or early previews: AI, Camera, Colony, Environment, UI and Vehicles. Their APIs and state models are inspectable, but central gameplay behavior remains incomplete.
• Editor and verification tools: Docs, Editor Tools, Scaffold, Simulation Harness, Tutorials and Version Control.

Online, Multiplayer, Materials, VFX, Animation and Cinematic are outside this snapshot.

Architecture in one diagram

graph TD
  Core[PGXCore]
  Established[Established systems] --> Core
  Functional[Functional previews] --> Core
  Structured[Structured previews] --> Core
  Tools[Editor tools] --> Core
  Harness[PGXSimHarness] --> Tools
  Harness --> Established
  Harness --> Functional

Loading

Feature runtime modules generally depend inward on Core. Cross-system coordination uses Core messages, Gameplay Tags, interfaces and registries. Editor aggregators may depend on selected feature modules without becoming runtime hubs.

Where to start

1. Read Development Preview and Release Model.
2. Follow Getting Started.
3. Open the ready-to-use Samples/PGXDemo project.
4. Inspect the Public Plugin Matrix.
5. Review Early Preview Plugins.
6. Read Simulation Harness and Known Issues.

Verification status

The exported candidate passed 792/792 Editor build actions, 414/414 Game build actions, 242/242 Editor Automation tests, 115/115 Game Automation tests and 3/3 PGX.Demo tests on Unreal Engine 5.7.4 with Windows Development targets. See Build and Validation for the limits of those results.