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Game Localization Guide: How to Translate Your Game

Updated March 2026 · 5 min read

By the Translate Multi team  •  Updated March 2026  •  10 min read
Quick Answer: Start with i18n preparation (extract strings to external files, design UI with expansion room), then translate UI strings using DeepL for European markets and specialized translators for narrative content. Use Translate in Many Languages to research localized competitor games and review how game-specific terminology appears in each target language.
📋 Table of Contents
📋 Table of Contents

Game localization is one of the highest-ROI investments indie and mid-size developers can make. Steam data consistently shows that German, Russian, Spanish, and French localizations each produce 10-30% additional revenue for localized games versus English-only releases targeting those markets. The investment in translation pays back through market access that does not otherwise exist.



Localization Priority by Market

LanguageKey MarketRevenue PriorityTranslation Complexity
GermanGermany, AustriaVery highMedium (text expansion)
RussianRussia, Eastern EuropeVery highMedium
FrenchFrance, CanadaHighMedium
SpanishSpain, Latin AmericaHighLow-medium
Brazilian PortugueseBrazilHighLow-medium
JapaneseJapanHigh (mobile)High
KoreanSouth KoreaMedium-high (mobile)High
Chinese (Simplified)China, SE AsiaHigh (mobile)High
PolishPolandMediumMedium

Research Localized Competitor Games in Any Language

Translate in Many Languages lets you browse localized game store pages, reviews, and forums in any language to understand market expectations. Free to install.

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Preparing Your Game for Translation (i18n)

Internationalization (i18n) — preparing the codebase before translation — determines how painful localization is:

  1. External string files: All displayed text in JSON, CSV, or XLIFF files — never hardcoded in source code. This allows translators to work in string files without touching code
  2. Unicode throughout: UTF-8 encoding in string files and rendering code — essential for CJK (Chinese, Japanese, Korean), Arabic, Russian, and any non-Latin script
  3. UI expansion room: Design all text containers with at least 150% of the English string length — German text runs 30% longer, French 25% longer
  4. No embedded text in images: All text must be in strings files, not in texture atlases or UI images — otherwise each translated market requires separate artwork
  5. Context notes in string files: Add comments explaining where each string appears ("This appears on the main menu screen as a button label, 15-character maximum")
Variable handling: When strings contain variable values ("You have {count} gold coins"), ensure the string format supports variable position reordering — in German, "You have gold coins 5" is grammatically incorrect but would result from simple string insertion if position is not flexible. Use named variables ({gold_count}) rather than positional ({0}) to allow translators to reorder as needed.


What to Translate and What Requires Specialized Translators

Machine Translation + Review (Acceptable for)

Specialized Game Translator Required



Tools for Game Localization

Research Game Markets and Localization Quality

Use Translate in Many Languages to read competitor game store pages in German, Russian, Japanese, and other markets. Understand what localized game pages look like and what quality level competitors offer. Free.

Install Translate in Many Languages


Translating Steam Store Listings

Steam allows separate store page content per language. Localized store pages:

Open International Game Markets

Translate in Many Languages is a free tool for game developers researching international markets and verifying localization quality. Install and start today.

Add to Chrome — It's Free


Frequently Asked Questions

What is the difference between game translation and localization?

Translation converts text. Localization adapts the full game experience — translation plus cultural adaptation, UI adjustment for text expansion, region-specific legal requirements, and potentially voice acting replacement. For indie games, translation is the practical first step. Full localization is for games with significant production budgets.

Which languages should I localize my game into first?

For Steam/PC: German, Russian, French, Spanish, Brazilian Portuguese. For mobile: Japanese and Korean have very high in-app purchase rates. Check Steam stats for your genre — some game genres have disproportionately strong presence in specific language markets.

How do I handle text expansion in game UI when translating?

Design UI with 150% English string length as minimum. Allow dynamic font size scaling in text boxes. Provide translators with character limits in string context notes. German and French run 25-35% longer — UI overflows are the most common localization bug.

Can I use machine translation for game localization?

Yes for UI strings, system messages, and informational text. No for narrative dialogue, character voice lines, humor, and Japanese/Korean content. Hybrid approach: machine translate UI, professional game translators for narrative. Machine-translated dialogue breaks immersion — it reads as flat and unnatural.

How do I make my game ready for translation (i18n)?

Extract all text to external string files. Use UTF-8 throughout for non-Latin script support. Design UI with expansion room (150% English length minimum). Never embed text in images. Add context notes to string files with character limits and where each string appears. Use named variables in string interpolation to allow position reordering.

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