reviewer: Codex Game Studio seed review
date: 2026-06-17
source-link: https://dev.epicgames.com/documentation/en-us/unreal-engine/
engine: unreal
version-reviewed: 5.5
tags: unreal,breaking,changes
roles: gameplay-programmer,engine-programmer,qa-playtester,release-manager
workflows: prototype,bugfix,architecture-review,qa-plan

# Unreal Breaking Changes

## Purpose

Surface version upgrade and compatibility risks before relying on engine behavior.

## Guidance

- Call out migration-sensitive APIs, package versions, serialization formats, and build settings.
- Separate confirmed breaking changes from speculative compatibility risks.
- Include rollback or compatibility notes for risky changes.

## Validation

- Prefer project-local engine commands and Codex Game Studio project validation before readiness claims.
- Record unknown version-specific behavior as a risk instead of presenting it as confirmed.
- Keep this reference selected by relevance; do not load every engine reference for one task.