Paper Sumo: Kamizumo
Tap the box, push them out
$2.99 · Designed for iPad. Not verified for macOS.
Drum your fingers on the box and the paper wrestler shuffles forward. The classic Japanese toy, rebuilt with real physics. Solo, two players, or online.
Tap the cardboard ring and the paper wrestler trembles forward.
Paper sumo (kamizumo) is a Japanese children's game: two folded-paper wrestlers on a box, moved only by drumming on the lid. This is that game, with real paper and cardboard textures and a physics simulation.
■ How to play
• Tap the screen rapidly: the box shakes and your wrestler inches forward
• Push the opponent out of the ring, or topple them, to win
• Tap too hard and your own wrestler falls. Rhythm is everything
■ Three ways to play
• vs CPU: a quick bout on your own
• 2 Players: put one device between you and drum on your own end
• Online: in the same room, connect directly over Wi-Fi/Bluetooth (no sign-in); far away, play through Game Center
■ Design your wrestler
Choose a ring name, face, skin, hair, mawashi colour and pattern, and paint anything you like with the brush.
The caller announces your wrestler and the referee's "Hakkeyoi, nokotta!" starts the bout.
■ Details
• Paper folds, corrugated cardboard, a wood-grain table: the textures of the real toy
• The paper wears out with use and can be replaced with a fresh sheet
• The decisive moment replays in slow motion and the winning move is announced
• Tsugaru shamisen music, wooden clappers and a cheering crowd
One purchase, no ads, no in-app purchases.
Music: Tsugaru Janbara Bushi / Momijiba Music
Ratings & Reviews
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The developer, Yuya Suzuki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yuya Suzuki
- Size
- 43.1 MB
- Category
- Sports
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 8 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Yuya Suzuki
