A game released in only one language is a game available to only one part of the world. Today, interactive entertainment is sold in dozens of countries across many different scripts, and players expect to be served in their native language — not as a premium feature, but as a baseline. A studio that ships in English only, or any single language, leaves revenue and goodwill on the table in markets that are ready to buy.
When done well, game localization is far more than word-for-word translation. It adapts interface text, voice-over, on-screen graphics, currency, date formats, store listings, age ratings, and cultural references so the experience feels native rather than imported. Literal translations can break immersion or accidentally introduce unintended humor — which is exactly why studios tend to reach for specialists rather than generic translation tools.
The question is: which one do you pick? The market breaks into three categories: self-serve platforms, full-service studios, and hybrid approaches that combine elements of both. This guide covers the providers worth knowing, what each does best, and how to determine which is the right fit for your title, followed by answers to the most common questions.
What to Consider Before Choosing
Before comparing vendors, it helps to understand what actually differentiates them.
Format and engine support comes first — a service is only useful if it handles your build’s output, whether that’s Unity, Unreal, or something custom. Pipeline integration is next: the best platforms detect new strings automatically as they’re added, eliminating manual exports and back-and-forth emails every time the build changes. Human expertise matters for narrative-heavy titles — a linguist who understands games, voice direction, and cultural nuance is very different from a general translator. Finally, scope and budget vary enormously: a full AAA dub with branching dialogue is a fundamentally different project from a text-only indie patch. Turnaround speed and built-in quality assurance round out the picture, since fast translation that ships with errors just moves the cleanup cost downstream.
Self-Serve Platforms
Crowdin
Crowdin is a Cloud-Based Localization Management platform for all sizes of developers, from individual ones to big publishers. It serves as a centralized repository for all translatable text, and gathers text from game engines, code repositories, and design tools in a common workspace to be collaborated on.
For games, it handles the formats that teams use: Unity and Unreal resource files, JSON, XML, .strings, .po and more. It allows integration with GitHub, GitLab and CI pipelines, and new strings are added to translation as the build progresses. Translators can work in an editor that shows screenshots and comments in an in-context editor that cuts out the guesswork to awkward in-game text. Other than that, Crowdin has machine translation capabilities, translation memory, glossaries, translation support for community projects, marketplace of integrations and professional vendors. A blend of internal team members, freelance and community volunteers can be managed with ease and without losing track of the ownership of the tasks through role-based access, task assignment and progress reporting. It’s a solid base for teams who wish to have continuous localization without the last minute run, and will grow as a catalog expands.
Lokalise
Lokalise is a Developer-First platform that is loved by mobile game developers and indie game developers. It integrates automation, a clean translation editor, a complete API, and CLI tooling that smoothly fits into existing build pipelines.
Contextual previews and screenshots allow translators to see where each string should end up in-game, while built-in quality checks make sure things like missing placeholders or strings that are too long are identified. Teams can order professional translation directly on the platform, and branching workflows make it an ideal solution for studios that ship often. The interface is clean and onboarding is quick, enabling teams lacking in localization knowledge to get up to speed easily.
Phrase
Phrase — previously called Memsource and PhraseApp — is an enterprise-grade localization platform that features a full-featured translation management system, extensive automation, and effective translation memory and machine translation orchestration.
It offers governance controls, analytics and the ability to scale and route projects across in-house and external linguists for large studios and publishers with many titles across multiple languages. Phrase is not a speedy single-project solution—it’s designed to handle large-scale localization initiatives for a whole portfolio. With dozens of products to choose from, it’s worth considering if you are not going to opt for one.
Smartcat
Smartcat combines a localization platform with a marketplace of freelance linguists, making it an effective all-in-one solution for teams that don’t have an established translator network. A single workspace handles project management, AI-assisted translation, vendor sourcing, and payments — eliminating the need to juggle multiple tools for procurement and billing.
AI-powered features accelerate first-draft translation, while human editors can refine tone and cultural appropriateness. For smaller teams that need both platform tooling and translation talent in one place, Smartcat removes much of the operational overhead typically associated with vendor management.
Gridly
Gridly takes a different approach: it was built specifically for games by the team behind LocalizeDirect, and it functions as a spreadsheet-style content hub — essentially a headless CMS for strings and game data — that keeps localized text in sync with all the other content a live game manages, from item descriptions to branching dialogue.
It’s particularly well-suited to live-service titles that update constantly and need localization to keep pace, with version control, reliable APIs, and engine integrations built in. For data-intensive projects where it makes more sense to treat localization as structured content rather than a collection of flat text files, Gridly is worth considering on every patch cycle.
Full-Service Studios
Not every studio wants to manage the localization process in-house. Full-service studios offer end-to-end translation, voice-over, testing, and culturalization — at the cost of some direct control over the workflow.
Keywords Studios
One of the biggest service providers in the games industry, Keywords Studios provide localization as part of their larger portfolio which covers audio and voice-over production, functional QA, localization QA, art services and player support. If you’re shipping lots of content to dozens of languages with a full dub, having all of the disciplines in one place is a true benefit for AAA publishers.
This width comes with a price tag, however, and that is that it is mostly suited for high production budgets. The leaner, smaller or indie projects might not be so welcoming — but if you’re launching a big project that’s constantly pushed for time, the single ownership of the disciplines is not to be overrated.
Altagram
Altagram is a specialist game localization company with an end-to-end solution that provides translation, linguistic testing, audio production, culturalization, and more, with teams that specialize in games, not generic content. This type of specialized agency complements studios that wish to produce highest-quality results without developing their own localization team.
It is especially important for narrative texts, where adaptation is necessary, not literal translation. There are some words, phrases, and references from the culture that are leftover from the original English version and survive in the translated one, and they do so only in the presence of a person who knows both the game and the target market.
Alconost
Alconost’s expertise lies in localization for games, apps, and software, and they have proven themselves to be very versatile with indie and mid-size studios. It can also translate into a variety of languages, and provides localization testing and trailer and video localization services which are helpful for teams that are preparing a global release via all channels.
It is flexible enough to accommodate smaller projects and is really open to studios localizing for the first time. A partner that can ease into the game is more important to a fledgling team than one that’s just constructed for big productions.
Choosing the Right Approach
The right service depends on your game’s scope, budget, and how it’s built.
Self-serve platforms, like Crowdin, Lokalise, Phrase, Smartcat and Gridly, are the best for those teams that are looking to have more control over the process and would like to use their own translators or those available on the platform. If you prefer to leave the whole thing to the professionals, consider the full-service studios, such as Keywords, Altagram and Alconost.
A number of studios use both: A platform as the system of record and an agency for linguistic expertise and QA. The better way to approach this is to determine which languages are most valuable to you and which tools are right for you, and then begin early enough to have localization work done concurrently with development, instead of waiting until the end.
Frequently Asked Questions
Is “translation” the same as “localization”? No. Translation means converting text from one language to another. Localization means adapting the entire game — interface, audio, graphics, currency, date formatting, cultural references — so that it feels native to the target market. A technically accurate translation can still feel jarring if it hasn’t been properly localized for context.
How much does game localization cost? It varies widely based on word count, language count, voice-over requirements, and testing scope. Text-only titles cost considerably less than AAA releases with full dubs in a dozen languages, which can run into the millions. Most providers charge per word for text and per hour or per line for audio.
Do I need a platform or an agency? If you want to manage the workflow and integrate localization into your build process, a platform is usually the right fit. If you’d prefer to hand the whole process to someone else, an agency is the better choice. Many studios use both: a platform for string management and workflow, and an agency for translation and testing.
When should I start localizing my game? As early as possible. Building in internationalization support during development is far less costly than retrofitting it after launch. Connecting a localization platform during development means new strings flow into translation automatically rather than piling up at the end.
Can AI replace human translators for game localization? AI translation has improved significantly and is genuinely useful for first drafts, high-volume content, and lower-stakes copy. It still struggles with humor, character voice, and cultural nuance, though — particularly in narrative-heavy titles. The standard approach is to use AI to accelerate the process and humans to ensure quality.
Conclusion
There’s no single best game localization service — only the right one for your game’s scope, engine, and ambitions. Platforms like Crowdin, Lokalise, Phrase, Smartcat, and Gridly give teams the infrastructure to treat localization as an integrated part of development. Full-service studios like Keywords, Altagram, and Alconost take the entire process off your hands.
Many game studios incorrectly treat localization as an add-on task to be handled late in the development cycle. In fact, localization must be integrated into core production processes: teams need to implement string externalization ahead of schedule, reserve enough space for text expansion, develop matching adaptation tools, and select suitable partners. With these measures in place, a game originally developed around a single language can cover all core global markets.
