Game Localization · Glossary
Back Translation — What It Is and When Games Use It
Back translation is the process of translating a previously localized text back into the original source language — not for use in the final product, but as a quality verification step to confirm the target-language version conveys the same meaning as the original. A second independent translator performs the back translation; the original source and the back-translated version are then compared for meaning accuracy.
How Back Translation Works
The process uses two separate translators. The first translator produces the target-language localization (e.g., English → Japanese). A second, independent translator who has not seen the original English text then translates the Japanese back into English. The project manager compares the original English to the back-translated English. Where the meanings diverge, the original translation is reviewed and potentially revised. Crucially, the second translator should not know the original source text — their back translation must be based solely on the target-language text.
When Game Studios Use Back Translation
Back translation is most valuable when precise meaning is critical and cultural adaptation should be minimal: in-game legal disclaimers and terms of service, health-related game mechanics or descriptions (fitness apps, medical education games), scientific or factual content in educational games, and regulatory submission requirements in markets that mandate back translation for certain content categories. For standard gameplay text — UI labels, item descriptions, combat dialogue — in-game LocQA provides quality assurance at lower cost.
Limits of Back Translation
Back translation struggles with intentional cultural adaptation. Idiomatic expressions, humor, puns, and culturally localized references are often deliberately different from the source — a back translation would flag these as errors even when the localization is excellent. Back translation also does not detect in-game display issues (truncation, font problems, layout breaks), which LocQA catches. It is a meaning-accuracy check, not a comprehensive localization quality check.
SandVox and Back Translation
SandVox offers back translation as an optional QA step for game content where precise meaning is critical — health-related mechanics, legal text, or narrative passages where subtle nuance drives character motivation. For standard gameplay text, in-game LocQA provides better value: it catches both meaning errors and technical display issues.
Related terms: Localization Qa · Linguistic Testing · Localization Style Guide · Mtpe
Frequently Asked Questions
Is back translation the same as proofreading?
No. Proofreading checks grammar, style, and fluency within the target language. Back translation checks whether the meaning of the target-language text matches the original source — it is a meaning-accuracy check, not a language-quality check. Both can be valuable; they catch different problems.
Does SandVox offer back translation as a service?
Yes, as an optional QA step for content where precision matters. We use independent translators — not the original translator — to perform back translation so the check is genuinely independent. The process is available for any language pair we support.
How much does back translation add to localization cost?
Back translation adds approximately 25–40% to the translation cost (the cost of a second translator reviewing the same word count). It is worth the investment for legally sensitive or medically adjacent content; less critical for standard gameplay text where LocQA provides sufficient assurance.
Need Expert Game Localization?
SandVox provides end-to-end game localization including back translation — for narrative games, mobile titles, webtoons, and interactive fiction.