Unreal Engine 5.x Best Practices Guide

The "Research First" Principle

Before implementing any gameplay system, always investigate whether Epic provides a newer, purpose-built system for it. Epic Games continuously introduces modern frameworks that replace ad-hoc solutions. Using the latest recommended system yields better performance, easier networking, designer-friendly workflows, and future compatibility.

Workflow:

1. Identify the problem domain (input, abilities, audio, particles, AI, UI, movement, etc.)
2. Check the Modern Systems Quick Reference below
3. If uncertain, search Epic's documentation and the UE Public Roadmap for the latest system status
4. Prefer production-ready modern systems over legacy approaches
5. For experimental systems: evaluate maturity before committing -- use them in prototypes, not shipping builds

Why this matters: Epic signals their direction through actions, not just announcements. When they rebuild the First/Third Person templates to use GAS and Enhanced Input, or when Fortnite ships with Game Feature Plugins and CommonUI, that is the clearest indicator of where the ecosystem is heading.

Official Documentation (always consult for latest details)