Dice 21: Number Puzzle
Place Dice. Make 21. Clear.
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Place a die. Make exactly 21. Clear the line.
Dice 21 is a quick number puzzle about choosing an open cell while reading the next roll. The rule is simple; the decisions and chains keep growing.
HOW TO PLAY
• Place the NEXT die in any open cell.
• Make one row or column total exactly 21 to clear it.
• Clear a row and column together for a DOUBLE 21 and 8× the points.
• Clear again within two moves to build a CHAIN worth up to 25×.
• Spend a Flip Token to turn one die to its opposite face.
• In timed modes, each score target adds 15 seconds.
PLAY YOUR WAY
• Four modes: 90 seconds, 3 minutes, 5 minutes, and Endless
• A high score for every mode, plus Game Center leaderboards
• The same daily dice sequence for every player
• Play streaks and rotating weekly missions
• Share your score and maximum CHAIN as an image
• 13 animal worlds, including rabbit, bear, cat, penguin, and more
The Theme Pack is a one-time purchase that permanently unlocks 11 premium themes. The Monthly Ad Skip Pass removes in-game ads while active and includes one ad-free continue in every eligible run.
Terms of Use (Apple Standard EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Restored one continue in every eligible standard game and clarified Daily practice replays. Removed distracting board tap highlights, added clearer remaining totals, improved Flip controls, How to Play, weekly missions, and results, and added shareable result cards and mission reward feedback.
The developer, RYO YAMAMOTO, 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 Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- RYO YAMAMOTO
- Size
- 32.6 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Monthly Ad Skip Pass $1.99
- Theme Pack $3.99
- Copyright
- © 2026 SilentBirdGames
