Right-to-left (RTL) localization is one of the most technically demanding categories in game localization. Arabic, Hebrew, and Farsi are read right-to-left — not just the text, but the entire UI must mirror. Elements that are positioned on the right in an English interface appear on the left in Arabic. Navigation flows reverse. Text alignment flips. For game developers who have never shipped an RTL language, the scope of UI changes required often comes as a surprise. This guide explains what RTL means for game localization, how game engines handle it, and what to prepare before starting an RTL localization project.

What RTL Means for Game UI

RTL localization affects more than text direction. In a properly localized RTL game: text is right-aligned by default; UI layout mirrors horizontally (the main menu that appears on the left in English appears on the right in Arabic); navigation flows reverse (next/previous, back/forward actions reverse their expected positions); progress bars and loading indicators fill from right to left; numbered lists count from right to left in RTL context; and text input fields accept input from right to left. Many developers assume RTL localization is just ‘flipping the text’ — it is significantly more extensive. A game that has text in Arabic but has not mirrored its UI will feel broken to Arabic-speaking players.

Arabic vs. Hebrew vs. Farsi — RTL Differences

Arabic, Hebrew, and Farsi are the three most common RTL game localization targets, but they differ in important ways. Arabic uses contextual character shaping — Arabic letters connect to adjacent letters and change form depending on their position in a word; a font that does not support contextual shaping will render Arabic as disconnected, incorrect characters. Hebrew does not use contextual shaping in the same way — Hebrew characters are independent, making Hebrew font rendering less technically demanding than Arabic. Farsi (Persian) uses a modified Arabic script with additional characters — it shares Arabic’s contextual shaping requirements but has different vocabulary and grammar. Modern Standard Arabic is used for game localization across all Arabic-speaking markets; Hebrew targets Israel; Farsi targets Iran.

Game Engine RTL Support

RTL support varies significantly between game engines: Unity has RTL text support through TextMeshPro — RTL must be explicitly enabled per text component, and Arabic requires the RTLSupport plugin or RTL-capable text renderer for correct contextual shaping. UI layout mirroring in Unity requires manual implementation or a layout mirroring system. Unreal Engine has native RTL text layout support — Arabic contextual shaping is handled by the text rendering system when using the appropriate font. UI mirroring still requires implementation. Godot 4 has built-in RTL support including text direction control and layout mirroring support — Arabic shaping is handled natively. Custom engines require manual RTL implementation including bidirectional text handling (BiDi) algorithms and UI layout mirroring systems.

Preparing Your Game for RTL Localization

Preparation steps before starting RTL localization: (1) Audit your engine’s RTL support — test Arabic text rendering with a test string before translation begins. (2) Identify mirroring requirements — document all UI elements that require horizontal mirroring. (3) Select RTL-capable fonts — ensure your font includes the required Unicode ranges and supports contextual shaping for Arabic. (4) Budget extra time for LocQA — RTL LocQA is more extensive than LTR LocQA because UI mirroring issues only appear when running the localized build. (5) Plan for bidirectional text — games with numbers, proper nouns, or English terms embedded in Arabic or Hebrew text require bidirectional text handling (text that mixes LTR and RTL runs).

Frequently Asked Questions