Roblox localization

Skill TabooHarmony/roblox-brain/skills/roblox-localization

Give your AI coding agent a Roblox brain. Curated skills for Roblox Studio development.

Install

npx -y skills add TabooHarmony/roblox-brain --skill roblox-localization

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Use when implementing Roblox multi-language support, translation tables, auto-translation, locale-specific content, or region detection.

SKILL.md

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Roblox Localization

When to Load

Load when implementing multi-language support, translation systems, locale-specific content, or region detection. Covers LocalizationService, LocalizationTable, auto-translation, and country/region detection.

Quick Reference

Locale Detection

player.LocaleId — locale the player set for their Roblox account (e.g. en-us, pt-br, ja-jp)
LocalizationService.RobloxLocaleId — locale for core/internal features
LocalizationService.SystemLocaleId — player's OS locale
LocalizationService:GetCountryRegionForPlayerAsync(player) — country code from IP geolocation (e.g. US, BR, JP)

Translation Tables

LocalizationTable — stores translation entries (key → translations per locale)
Parent LocalizationTable under LocalizationService for auto-translation
Set GuiBase2d.RootLocalizationTable on GUI objects for per-element tables
Studio can auto-extract strings into a table via the Localization Tools plugin

Auto-Translation

Roblox auto-translates GUI text if RootLocalizationTable is set and entries exist
Set TextLabel.Text normally — the engine replaces it with the translated string for the player's locale
Missing translations fall back to the source text

Manual Translation

local translator = LocalizationService:GetTranslatorForPlayerAsync(player)
local translated = translator:Translate(game, "Welcome!")
local formatted = translator:FormatTranslate(game, "Coins: {0}", {count})

Country/Region Detection

local country = LocalizationService:GetCountryRegionForPlayerAsync(player)
if country == "US" then -- USD pricing
elseif country == "GB" then -- GBP pricing end

Key Rules

GetCountryRegionForPlayerAsync is async — wrap in pcall, may fail
GetTranslatorForPlayerAsync is async — cache the translator
Auto-translation only works on GUI elements with RootLocalizationTable set
Translation entries: SourceText, SourceLocaleId, then en-us, pt-br, etc. columns
Export/import tables as CSV from Studio for bulk editing
Test with different locales using Studio's locale simulator

Pitfalls

Not all locales supported — check player.LocaleId
Auto-translation does NOT work on non-GUI text — use manual Translator:Translate
GetCountryRegionForPlayerAsync uses IP geolocation — VPNs give wrong results
Missing entries fall back to source text silently

Need more detail? Load references/full.md.