Game Localisation for Japan: Translation, Character Voice and Testing
Localising a game for Japan means more than translating its text. Japanese players expect natural dialogue with distinct character voices, menus and tutorials that fit the screen, and store pages, trailers and community posts written for them. Start with a clean text export and a glossary, give translators context such as screenshots and character notes, plan for longer or shorter strings in the UI, and have native players test the build before launch. Done well, localisation can turn Japan into one of your strongest markets. Here’s how to approach it.
What needs localising
| Area | What it includes |
|---|---|
| In-game text | Dialogue, menus, item names, tutorials, quest text, error messages |
| Audio | Japanese subtitles, or scripts for Japanese voice recording |
| Images | Text inside textures, logos, signs and UI art |
| Store and marketing | Store pages, trailers, press kits, social media and community updates |
| Support | Help pages, FAQs, patch notes and player support replies |
Character voice is everything
Japanese has many ways to say “I”, end a sentence or address someone, and each one tells players about a character’s age, gender, personality and status. A grumpy old knight, a cheerful shopkeeper and a shy student shouldn’t sound the same. Give translators a character sheet for each speaking role, with personality, age and relationships, so they can choose the right speech style and keep it consistent. Our guide to casual vs polite Japanese explains some of these differences.
Technical preparation
- Externalise all strings into files translators can work on, with unique IDs and context notes.
- Support Japanese fonts with the full set of kana and the kanji you need, and check line breaking. Japanese has no spaces, so lines need to break at sensible points.
- Plan for length changes. Japanese is often shorter than English in characters but needs larger font sizes to stay readable, so test every screen.
- Avoid building sentences from pieces (“You found 3 + item”). Japanese word order differs, so use full sentences with placeholders.
- Handle counters and plurals. Japanese uses counters instead of plural forms. See our guide to Japanese numbers and counters.
Give translators context
Most poor game translations come from missing context, not weak translators. Share screenshots, a playable build if possible, a glossary of names and terms, and a note on the tone you want. Answer questions quickly. A single word like “charge” can mean an attack, a battery or a price.
Names and culture
Decide early whether character and place names stay as they are in katakana or get new Japanese names, and keep a glossary. Check jokes, puns and cultural references: some need a new joke, not a translation. Be aware of age ratings in Japan, which are set by CERO for console games. Our guide to choosing a brand name for Japan covers checking how names sound to Japanese ears.
Test with native players
Linguistic quality assurance (LQA) means native speakers play the localised build to catch text that overflows, wrong context, inconsistent terms and lines that sound unnatural. Budget time for at least one round before launch and another after the first patch.
How Hanabuddies can help
We translate games, store pages and community posts between English and Japanese, with attention to character voice and consistent terminology, and our native speakers can review your Japanese build. For indie studios, we can start with your store page and demo. Tell us about your game, its word count and your launch date, and we’ll send a quote.