Penko Vox: Japanese on Steam

All Games > Casual Games > Penko Vox: Japanese

Penko Vox: Japanese

Learn Japanese by talking. Explore a retro island RPG where every resident answers what you actually say, practise 38 everyday scenarios by text or voice, and get gentle corrections. The AI tutor runs fully offline on your PC: private, unlimited, no subscription.

All Reviews:

2 user reviews - Need more user reviews to generate a score

Release Date:

Aug 10, 2026

Developer:

Penko Software

Publisher:

Penko Software

	Interface	Full Audio	Subtitles
English	✔		✔
French	✔		✔
German	✔		✔
Japanese	✔	✔	✔
Korean	✔		✔
Simplified Chinese	✔		✔
Spanish - Latin America	✔		✔
Vietnamese	✔		✔

Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

Leaving Early Access: August 2027

What the developers have to say:

Why Early Access?

“Penko Vox is built on local AI: a language tutor, speech recognition and voices that all run on your own computer. This technology is improving quickly, and the best way to shape a learning tool is with the people using it. Early Access lets us release what already works well, learn from real learners where the conversations, corrections and controls feel natural or awkward, and improve the game update by update.”

Approximately how long will this game be in Early Access?

“We plan to stay in Early Access for about a year from launch, and are aiming for a full release in the second half of 2027. We'll keep updating throughout, and we'll only leave Early Access when the game feels complete.”

How is the full version planned to differ from the Early Access version?

“We plan to:
- Expand the Kotoba Islands with more places to explore, residents, jobs and stories.
- Add more conversation scenarios, especially for intermediate and advanced learners.
- Keep improving the accuracy of the AI's Japanese, its corrections and its readings as better local models become available.
- Deepen the learning tools, such as progress tracking and more exercise types in the Study Hub.
- Continue polishing controller and Steam Deck play.”

What is the current state of the Early Access version?

“Penko Vox is fully playable and runs completely offline. It currently includes:
- Kotoba Islands, a retro RPG where you talk freely with every resident, shop, take on jobs, befriend animals and collect stamps.
- 38 conversation scenarios from JLPT N5 to N1, plus custom scenarios you create yourself.
- Voice calls with natural turn-taking.
- Gentle corrections, Penko Sensei for questions, a built-in offline dictionary with tap-to-lookup, furigana and romaji.
- Kana and beginner kanji stroke practice, and a Study Hub with spaced repetition.
- An interface in 8 languages, and support for mouse, touch and controller on Windows, Linux and Steam Deck.

Things to know: the AI can make mistakes, especially at N2 to N1; controller and Steam Deck support is recent and still being refined; and the local AI needs a CPU with AVX2 and 16 GB of RAM.”

Will the game be priced differently during and after Early Access?

“Yes. The price is lower during Early Access, and we plan to raise it when the game leaves Early Access. Everyone who buys during Early Access gets every update, including the full release, at no extra cost.”

How are you planning on involving the Community in your development process?

“We read every discussion, review and bug report on the Steam Community Hub, and each update's notes explain what changed and why. Feedback on the Japanese itself (wrong readings, unnatural phrasing, confusing corrections) is especially valuable, as is feedback on controls and Steam Deck play. We also plan to ask players which scenarios, places and features they'd like to see next.”

Buy Penko Vox: Japanese

$24.99

Add to Cart

Report bugs and leave feedback for this game on the discussion boards

See all discussions

About This Game

Learn Japanese by actually talking

Most apps teach you words. Penko Vox gives you people to use them with. Walk up to anyone in a retro island world and say whatever you want in Japanese, order coffee in a café, call a friend by voice, and get gentle corrections as you go, all on your own computer, fully offline.

It's a safe place to make mistakes: no audience, no judgment, no time limit, and no subscription.

Kotoba Islands: a world that talks back

Talk to anyone, in your own words. There are no dialogue menus. Every resident answers what you actually say, and they remember you, your visits and what you've told them.
Live a little life in Japanese. Shop at the konbini, take on odd jobs for yen, befriend animals, and collect stamps across towns, routes, beaches and shrines.
Interact with anything. Buy a drink from a vending machine, sit at a kotatsu or pet a rabbit by typing what you want to do, text-adventure style.

38 everyday scenarios, from N5 to N1

Order at a café, get lost at the station, pay at the convenience store, shop for clothes, call in sick. Each scene has a character with a personality and a goal to reach. Hand over real yen and get your change, use the items in your pocket, and follow the scene as it moves forward. Build your own scenarios too: choose the role, the place and the topic.

Voice calls

Speak out loud and the character answers in their own voice. Pause, think, carry on, or interrupt them mid-sentence, just like a real phone call. Speech recognition runs on your computer, so your voice never leaves it.

Gentle corrections, never a lecture

When you make a mistake, the character naturally rephrases what you meant, the way a good teacher does, and the conversation keeps going. Want to know why? One tap shows the explanation, and Penko Sensei is always there for questions in your own language.

Read, write and remember

Tap any word for its reading, meaning and audio from the built-in offline dictionary, and save it with one tap.
Furigana and romaji can be switched on or off, so complete beginners can start from day one.
Stroke practice for hiragana, katakana, beginner kanji and words, with animated stroke order.
Study Hub with modern spaced repetition (FSRS) and auto-graded exercises, with no daily caps. Study as much as you want.

Private by design

The AI tutor, speech recognition and voices all run locally. There are no accounts, no telemetry and no cloud. Your conversations and recordings stay on your machine. With no servers, there are no token limits and no monthly fees: buy once, practise as much as you like.

Play your way

Interface in 8 languages: English, Spanish, French, German, Korean, Chinese, Japanese and Vietnamese.
Mouse and keyboard, touch, or controller, including a phone-style flick keyboard for typing kana.
Runs on Windows, Linux and Steam Deck.

Good to know

Penko Vox uses generative AI. It's a strong practice partner, but it can make mistakes, especially at N2 to N1. It's a learning aid, not a replacement for a teacher or an official exam.
The AI runs on your own hardware: a CPU with AVX2 and 16 GB of RAM are required, and an SSD and a dedicated GPU give faster replies. The first reply after launch takes a moment while the model loads.

AI Generated Content Disclosure

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

Penko Vox: Japanese uses local generative AI to power its immersive language learning experience. An integrated Large Language Model (LLM) acts as a native Japanese tutor, generating real-time dialogue based on user input, while a Neural Text-to-Speech (TTS) engine synthesizes high-fidelity Japanese audio for listening practice.

System Requirements

Windows

SteamOS + Linux

Minimum:

Requires a 64-bit processor and operating system
OS: Windows 10 (64-bit)
Processor: Quad-core CPU with AVX2 support (Intel Core i5-8400 / AMD Ryzen 3 3100)
Memory: 16 GB RAM
Graphics: Intel UHD Graphics 630 / AMD Radeon Vega 8 (DirectX 11 / 12 compatible)
DirectX: Version 11
Storage: 15 GB available space
Sound Card: Windows Compatible Sound Card
Additional Notes: 16 GB of system RAM and AVX2 CPU instruction support are required for smooth on-device AI neural inference. Solid State Drive (SSD) is strongly recommended for fast initial model warm-up.

Recommended:

Requires a 64-bit processor and operating system
OS: Windows 11 (64-bit)
Processor: 6-Core / 12-Thread CPU or higher (Intel Core i5-12400 / AMD Ryzen 5 5600X)
Memory: 32 GB RAM
Graphics: NVIDIA GeForce RTX 3050 / RTX 3060 (4GB+ VRAM) or AMD Radeon RX 6600
DirectX: Version 12
Storage: 20 GB available space
Sound Card: Windows Compatible Sound Card
Additional Notes: An SSD and dedicated GPU provide the fastest real-time response times (sub-2 second token streaming) during voice calls and dialogue practice.