Archived App (Last seen on 22 Feb 2026)
This is an archived listing of the app previously available on the App Store.
A strategic card game where players aim to clear the table by combining cards to reach exactly 21 points. Race against the clock to complete challenging levels with new card combinations and time limits.
1.3.4
August 26, 2024
• Improved system performance and stability. • Fixed known issues. • Optimized the user experience of some functions.
MoreThe main objective of Challenge-21 is to clear the entire table by strategically combining cards to achieve a total score of exactly 21 points without exceeding it.
Challenge-21 incorporates a ticking clock that adds a sense of urgency. Players must strategize and make moves quickly to avoid running out of time before clearing the table.
Yes, Challenge-21 features challenging levels, each presenting new card combinations and time challenges to test the player's skills.
Challenge-21 is currently available for iPhone and iPod devices.
Challenge-21 was last updated on August 26, 2024, indicating recent development and potential for future updates.
No, Challenge-21 does not contain advertisements.
The provided information does not specify whether Challenge-21 can be played offline. It is recommended to check the app store listing for offline play details.
Challenge-21 has an age rating of 4+, making it suitable for a wide range of players.
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