About This Software

Powerful simultaneous interpreting for in-game voice chat — real-time translation and two-way voice relay.

Whether you're playing untranslated overseas indie games/JRPGs, teaming up in cross-border multiplayer co-op, or watching foreign game showcases and esports livestreams, TransBox provides low-latency in-game subtitles and voice interpretation.

Highly customizable plugin architecture. Subscribe to game-specific glossaries, themes, voice packs, and engine mods on Steam Workshop, or package and publish your own.

The AI era is here, and the foundation is already in place. Simply pass the Mod development documentation to your AI assistant to quickly build compatible plugins! Welcome to vibe coding — build your own accessible gaming tool!

FEATURES

• Floating Subtitle Bar: Click-through, streaming bilingual captions — stays out of your sightlines and won't interfere with controls in fullscreen gaming

• Real-Time Speech Recognition

• Real-Time Machine Translation

• Real-Time Speech Synthesis

• Two-Way Voice Relay: WASAPI process isolation — broadcast two-way translation seamlessly across Steam Voice and Discord co-op

• Glossaries: terms.txt / terms.json force correct translations for in-game gear, skills, and lore

• Themes & QML Slots: Customize subtitle styles and game-inspired HUD UI components

• History Log: Full-text search, export, read-aloud, and single-line copy for in-game dialogue and quest text — never miss critical clues

PERFORMANCE

Default engines run locally; download the models to work fully offline.

The overlay is optimized with low VRAM usage. Enable click-through in fullscreen games without affecting controls.

WORKSHOP

Steam Workshop is supported.

Subscribe to community-made glossaries, subtitle themes, and voice packs, or build and publish your own extensions on standard Python / QML contracts.

Local engines or cloud engines — your choice.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

This utility app uses artificial intelligence models to perform real-time speech-to-text transcription (ASR), live subtitle translation (MT), and local text-to-speech synthesis (TTS) based on the user's voice or PC audio stream.