Four By 21

7.0

Words and Maps

4.13

294 reviews

50,000+
Downloads

Free

Solitaire meets Blackjack. Try to create four stacks of cards equalling 21.

About Four By 21

Four By 21 is a card app developed by Words and Maps.

Download Statistics

Four By 21 has been downloaded 55 thousand times. In the last 30 days, the app was downloaded 4 times.

User Ratings

Four By 21 is rated 4.13 out of 5 stars. The rating is based on 290 ratings.

App Information

Four By 21 is FREE to download. The APK download size is 11.26 MB. The latest version available is 7.0. The last update was on August 23, 2025.

Technical Requirements

Four By 21 requires Android 5.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play October 2012.

Description

Four By 21: Solitaire meets Blackjack in this fast-paced single-player game. You are dealt one card at a time. Choose one of the four stacks to place the card. When the card values in a stack add up to exactly 21, that stack is cleared and you will score a point. If a stack value is over 21, that stack is busted. The game is over if you bust 5 times, or run out of time on the clock. Bonus points are given for consecutive stacks cleared.

Brought to you by the makers of Pressed For Words!

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More data about Four By 21

Price	Free to download
Total downloads	55 thousand
Recent downloads	4
Rating	4.13 based on 290 ratings
Ranking	Not ranked
Version	7.0
APK size	11.3 MB
Number of libraries	30
Designed for Android	5.1+
Suitable for	Everyone
Ads	Contains ads

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Comments on Four By 21 for Android

★★★★☆ A Google User · Sep 28, 2014

Hey. Hey. Hey. Its fun without the hassel

★★★★☆ Fugp Basis · Sep 13, 2017

This is yet another just OK example of a game that is trying to fill the void left by Megatouch being too stupid to realize the potential of coming out with an official Megatouch Card game for mobile devices. The first company that comes out with a bundled set of multiple card games that have the SAME rules and scoring as the old 90s bar games of Zip 21 (like this), or Run 21, Poker scramble, 11-Up, etc. will make a lot of money. It would be the first, and probably only, game I would gladly pay for. And that would stay on my phone for more than a month. Again, this game is not bad by itself. But since it will obviously be played most by people fondly remembering their alcoholic days in the 90s and 00s, it will just feel like a let-down. Especially since you can't WIN. That was the main sense of accomplishment. CLEARING the board. This deprives you of that by being an endless run.

★★★★☆ Ron Coyne · Sep 26, 2020

Good version of the ubiquitous "Run 21" game, but docked a star for constantly yammering at me to sign into Google Play Games every time I play... should be something selectable in the "options" menu.

★★☆☆☆ A Google User · Jun 24, 2014

Too many ads If u click to get out of one ad, when u click on a new game another ad would pop up. Then the Google games would pop up.

★★☆☆☆ Sean Montgomery · Apr 30, 2020

Liked the game at first, timer is ridiculous, it was fun, at least 90 times, I got either a 21 or a blackjack, however 20 times their upcoming card put me in a nasty bustable situation. I heard that from Catch 21. I uninstalled it because I was in peril of being shutout of points. They're supposed to give good cards, so you can score. I tried finding 21 Blitz, having trouble with that.

Google Play Rankings for Four By 21

This app is not ranked

Technologies used by Four By 21

Four By 21 is requesting 9 permissions and is using 31 libraries.

Permissions

Network communication

view network connections, full network access

System tools

prevent phone from sleeping

Extra

android.permission.ACCESS_ADSERVICES_AD_ID, android.permission.ACCESS_ADSERVICES_ATTRIBUTION, android.permission.ACCESS_ADSERVICES_TOPICS, android.permission.FOREGROUND_SERVICE, com.google.android.gms.permission.AD_ID, net.aharm.fourby21.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

AdMob

Social libraries

Google Play Games Services

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Firebase Android Library Icon

Firebase

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State AndroidX Loader Android Library Icon

AndroidX Loader

Android Transition Support Library

Android Support Library collections Kotlin Android Library Icon

Kotlin

Android Support VectorDrawable

AndroidX Legacy: Support Library core utils AndroidX Cursor Adapter Android Library Icon

AndroidX Cursor Adapter

AndroidX Local Broadcast Manager

Android Support Library Print

Android Support Library Document File Google gson Android Library Icon

Google gson

AndroidX Legacy: Support Library core UI Android WorkManager Android Library Icon

Android WorkManager

Android Support Library Async Layout Inflater JetBrains Annotations Android Library Icon

JetBrains Annotations IntelliJ IDEA Android Library Icon

IntelliJ IDEA Chromium Android Library Icon

Chromium

Google Guava The Checker Framework Android Library Icon

The Checker Framework

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