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Battle SHIRYU

Game overview

Battle SHIRYU

Dr. Takahiro Yonemura · Oct 27, 2026

Mouse or webcam—experience the controls of the future! Swing the paper dragon and use the recoil to slam its tail! Play without a webcam. A game-based app inspired by 2002 research into contactless interfaces, with a dragon you can steer by hand.

Experimental Dragons Futuristic Arcade Action
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About this game Read the full description

Experience the future of control!

Born from 2002 research into contactless interfaces, this game-based interactive software lets you steer a paper dragon with your hand.
Developed by Takahiro Yonemura, Ph.D. (Engineering)

New here? Watch the tutorial!

Leave the game on the title screen without any input for a little while. A tutorial will start automatically and walk you through the controls and gameplay. Give it a watch to learn how to play!

Swing the paper dragon and use the recoil to slam its tail!

Steer a paper dragon with your hand in this action game. Raise your hand for automatic webcam recognition, close and reopen it to click, and lower it to pause. No special markers or green screen are needed. Swing the dragon’s tail into Moai, trigger same-colour chains and clear stages across eras. Mouse controls are also available.

The present, Edo-era Japan, prehistory—and somewhere mysterious!

Your journey continues across multiple stages, with changing eras, scenery and challenges. Break through each stage and see where the paper dragon’s journey leads. Can you reach the Goddess at the end… or will it all explode?!

Base price: US$4.99 / ¥500 in Japan. A 25% launch discount is planned for 10 days (Japan: ¥375). Regional prices vary.

Line up the next strike

Hard Moai and obstacles make each stage trickier. Guide the dragon around them and use its tail to reach the next target.

Paper pictogram showing an open hand, a webcam, and the paper dragon in a stage; hand movement can control the dragon.

Hand control needs a compatible webcam and camera access permission in Windows or macOS. No markers, green screen, or elaborate backdrop are required; lighting and framing can affect recognition. You can always play with a mouse instead. Pictograms guide play without in-game text to read.

Takahiro Yonemura's 2002 research on a contactless camera interface inspired this game, realized in 2026.
Comparison of a 2002 CCD-camera study of finger and head recognition with a 2026 webcam hand-recognition demonstration.
Media gallery 5 screenshots · 0 videos
Battle SHIRYU game capsule image

Screenshots

Battle SHIRYU screenshot 1
Battle SHIRYU screenshot 2
Battle SHIRYU screenshot 3
Battle SHIRYU screenshot 4
Battle SHIRYU screenshot 5

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System requirements Windows · macOS · Linux

Windows

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows 10 (64-bit)
  • Processor: 64-bit x86-64 processor (Intel or AMD)
  • Memory: 4 GB RAM
  • Graphics: DirectX 11-compatible integrated or virtual graphics; dedicated GPU not required
  • DirectX: Version 11
  • Storage: 2 GB available space
  • Additional Notes: Confirmed to run in a Windows 10 (64-bit) VMware virtual machine with 4 GB RAM. Mouse play requires no camera; webcam hand controls may need a faster CPU.

Recommended

Recommended:
  • Requires a 64-bit processor and operating system
  • OS: Windows 11 (64-bit)
  • Processor: 64-bit x86-64 processor (Intel or AMD)
  • Memory: 16 GB RAM
  • Graphics: NVIDIA GeForce GTX 1660 SUPER or equivalent DirectX 11 GPU
  • DirectX: Version 11
  • Storage: 2 GB available space
  • Additional Notes: USB webcam, including a Windows-compatible CCD camera, recommended for hand controls. No green screen required.

macOS

Minimum

Minimum:
  • OS: macOS 13 Ventura or later
  • Processor: 64-bit Intel processor; Apple Silicon requires Rosetta 2
  • Memory: 4 GB RAM
  • Graphics: OpenGL 4.1-compatible graphics
  • Storage: 2 GB available space
  • Additional Notes: Mouse play requires no camera. A webcam is required for hand controls. Intel 64-bit app; Rosetta 2 is required on Apple Silicon. Steam achievements are available in the Windows version.

Recommended

Recommended:

    Linux

    Minimum

    Minimum:
    • OS: Ubuntu 22.04 or later (64-bit), or a compatible Linux distribution
    • Processor: 64-bit x86-64 processor (Intel or AMD)
    • Memory: 4 GB RAM
    • Graphics: OpenGL 4.1-compatible graphics
    • Storage: 2 GB available space
    • Additional Notes: Native Linux version. Mouse play requires no camera. A Linux-compatible webcam is required for hand controls. Tested on physical hardware via USB boot, including Zorin OS. XWayland is required on Wayland desktops. Steam achievements are available in the Windows version.

    Recommended

    Recommended:
      Game details Languages, features & support
      Publisher
      Inazuma Inc.
      Brazilian rating
      6
      Steam Germany rating
      6
      Achievements
      6
      Features
      Single-player, Steam Achievements, Adjustable Difficulty, Mouse Only Option
      Languages
      English, French, German, Spanish - Spain, Finnish, Portuguese - Portugal, Simplified Chinese, Traditional Chinese, Japanese, Korean, Italian, Spanish - Latin America, Turkish, Portuguese - Brazil, Polish, Russian
      More analysis Activity patterns, updates & developer tools

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      Game Insights

      Buy Verdict

      Watch — $4.99.

      Decent deal at 0% off, but might drop further. Watch for better opportunities.

      ▲ ~13 days until next sale

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      Developer Analytics

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      Frequently Asked Questions

      Is Battle SHIRYU worth buying right now?
      Watch — $4.99. Decent deal at 0% off, but might drop further. Watch for better opportunities.
      When does Battle SHIRYU go on sale?
      Decent deal at 0% off, but might drop further. Watch for better opportunities.
      Is Battle SHIRYU free to play?
      Battle SHIRYU costs $4.99 on Steam.
      What genre is Battle SHIRYU?
      Battle SHIRYU is a Action, Adventure, Casual, Indie, Sports, Education game.
      Who developed Battle SHIRYU?
      Battle SHIRYU was developed by Dr. Takahiro Yonemura and published by Inazuma Inc..
      What platforms does Battle SHIRYU support?
      Available on Steam for Windows, macOS, Linux.

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