CLIFF Localization Suite — A Complete Translation Workflow With Context and AI

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Unreal stores text as a key, a source string and a translation. Nothing about what the string is — a button, a noun, a line of dialogue — survives into the tables your translators and your AI models read.

This plugin is the whole workflow around that gap: it puts the meaning back into every string, translates what is missing with AI, validates the result, and writes it into the engine's own localization pipeline. Extract, translate, review, ship — from the editor, or from CI. The context format underneath is CLIFF (Contextual Localization Integrated Format) 1.0; this plugin is its Unreal side.

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✨ WHAT YOU CAN DO

🔄 Round trips that lose nothing

• Import into the official manifest/archive pipeline and export back, with a key sidecar so your original namespaces and keys survive byte for byte.

🧩 A strict validator, not a text munger

• Headers, groups, entries and the closed type/emotion/status vocabularies are validated in C++, matching the reference implementation. Errors come with file and line.

🤖 One-button AI translation

• Export → translate → import in a single run. Only missing strings are translated, human-reviewed work is untouchable, placeholders are validated, and empty or unchanged results are rejected instead of written.

🧭 Mapping you control

• Three tables in Project Settings link semantic families to namespaces and derive type and tone. Nothing is hard-coded, and anything it cannot infer degrades to "sentence" with a warning instead of guessing silently.

🧱 Your pipeline, untouched

• Custom GatherText steps, the official resource generator, the official progress window, Dashboard toolbar buttons. No engine patches, no Python, no third-party binaries.

🌏 15 languages included

• The plugin's own interface ships translated — zh-Hans, ja, ko, ar, ru and more — with the native culture compiled too, so the editor never falls back to English.

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⏭️ COMING SOON (FREE UPDATES)

• Glossary-aware translation · Glossary file variant support · Custom AI providers · Batch review UI

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📦 EDITIONS

• CLIFF Localization Suite (Alpha) — full plugin: bidirectional conversion, semantic mapping, AI translation, CLI automation.

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⚙️ TECHNICAL DETAILS

• Engine Versions: Unreal Engine 5.8 (Latest)

• Platforms: Windows, Mac, Linux

• Licensing: Licensed per-seat according to FAB's policy. Reselling or redistributing the plugin or its source code is strictly prohibited.

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👤 ABOUT THE AUTHOR

GameGeek-Saikel is an independent developer focused on Unreal Engine plugin support and game development.