Fourules（フォールズ）
%E8%87%AA%E5%96%B6%E6%8F%90%E6%90%BA%E5%90%88%E5%90%8C%E4%BC%9A%E7%A4%BE Card In-app purchases Contains ads
A crypto game where you combine five cards using basic arithmetic operations to create a target number.
- Downloads
- 9+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Jun 24
- 2026 · v1.6.1
Screenshots
About Fourules（フォールズ）
Add, subtract, multiply, divide—find the target number!
Enjoy "Crypto," a card game where you combine five number cards using basic arithmetic (+, -, ×, ÷) to create the target number, now available as an app!
Compete for the fastest time across 9 rounds, using up all 54 cards. Aim for a perfect run!
[Features]
• Simple rules for a serious brain battle
• Set a time limit of 1-5 minutes per question
• Choose from 3 difficulty levels for the cards used
• Save your top 5 records
• Share your results on social media
• Supports Japanese and English
Perfect for brain training and math practice!
Enjoy "Crypto," a card game where you combine five number cards using basic arithmetic (+, -, ×, ÷) to create the target number, now available as an app!
Compete for the fastest time across 9 rounds, using up all 54 cards. Aim for a perfect run!
[Features]
• Simple rules for a serious brain battle
• Set a time limit of 1-5 minutes per question
• Choose from 3 difficulty levels for the cards used
• Save your top 5 records
• Share your results on social media
• Supports Japanese and English
Perfect for brain training and math practice!
What’s new
Version 1.6.1 · Updated June 24, 2026
Fixed an ad content issue related to the Family Policy requirements. Added settings to ensure ad content is appropriate for younger users.
Alternatives to Fourules（フォールズ）
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Fourules（フォールズ） | – | Free | 5+ | Jun 24, 2026 | |
| Chess Sudoku | 4.7 / 5 | 4.99 USD | 10,000+ | Dec 7, 2025 | Compare |
| Sudoku Dojo: Logic Mastery | 4.5 / 5 | Free | 10,000+ | Sep 27, 2026 | Compare |
| Kakuro: Number Crossword | 4.8 / 5 | Free | 100,000+ | Jul 7, 2026 | Compare |
| Nurikabe: Islands & Walls | 4.8 / 5 | Free | 50,000+ | Apr 16, 2026 | Compare |
| Sudoku Minimal | – | 2.49 USD | 500+ | Sep 5, 2026 | Compare |
| Sudoku: Classic & Variations | 4.7 / 5 | Free | 100,000+ | Mar 21, 2026 | Compare |
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