Advanced 21 Blackjack

4.0
485 reviews
Content rating
Rated for 18+
10K+
Downloads
Content rating
Rated for 18+
Simulated gambling, In-game purchases
In-game purchases
Learn more
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About this game

Advanced 21 Blackjack is the most realistic, free way to play twenty-one without setting foot a casino. With customizable table rules, graphics and play style, this blackjack game provides thousands of hours of playtime, strategy building and fun!

Advanced 21 Blackjack puts you in complete control of your play experience, including:
- Deck shoe size (1 to 8 decks)
- Blackjack payout ratio
- Allowing surrender
- Double down after split
- Dealer hit or stand on soft 17
- Pay on push
- Automatic Winner Charlie Rules

Make the game your own while practicing new betting strategies, table positioning, and basic blackjack strategy:
- Play at up to 6 seat positions simultaneously
- Have computer players randomly come and go simulating a real casino experience
- Specify computer play positions if you wish, or turn them off completely
- Set the gameplay rules for: auto-rebet, auto-stand, showing suggestions for the basic blackjack strategy, auto declining insurance, show or skip animations, and much more!

Continue to hone your skills with Advanced 21 Blackjack through table advancement, starting as “The Rookie” and earning your way to the “The Whale” table. Earn club points by completing achievements and to unlock new graphics, including:
- Poker chip sets
- Card deck faces
- Card backs
- Table prints and unique bet boxes
- Table pad colors and font textures

Want to make suggestions on Advanced 21 Blackjack or report an issue? Contact us at advanced21@basement.software. Thanks!

Please note: Advanced 21 Blackjack is free to download and play, however, some options are available through in app purchase. If you do not want to use this feature, please set up password protection or disable in app purchases within the app store.

A network connection is required to play Advanced 21 Blackjack.

This free blackjack app is intended for adult audiences and does not offer any real money gambling nor offer any opportunities to win real money or prices. Any success within Advanced 21 Blackjack does not imply any future success in real money casinos or gambling.

Gambling addiction is real. If you or someone you know may be addicted to gambling, call or visit your local gambling helpline.
Updated on
19 May 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.0
437 reviews
A8484AD
15 March 2026
This is by far the best Blackjack game I have found on PlayStore, and I have tried a lot. The one implemention I think it needs is 'An All In Button' so we do not have to put all the 10's and 5's and small chips across manually when we are near to losing everything. The one thing it has shown me is never go to a casino in the hope of being profitable at blackjack!
3 people found this review helpful
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Timothy Juarez
14 April 2025
I'm not a Blackjack enthusiast in any stretch of the word. But, the developers have done an excellent job on this assignment. I like the fact that I can be the only one at the table by playing 6 hands simultaneously. A21BJ gives the option to invite random computer players whenever I like. there are some extras to purchase and the bankroll is generous when I run into trouble. So the one thing that takes that one star from shining. Is the minimalist fashion in which A21BJ was created. 5 if shine
4 people found this review helpful
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no1 uKno
9 August 2020
I love how the cards don't look like the upper right quarter of cards seen in other games but full playing cards. The customizability options are a major plus as well. I would love to see an option to switch out the $0.50 chips with $2.50 chips--if only for those who are used to seeing $2.50s at the Blackjack table. Also the dealer shoe and discard tray should remain static on the table but so far this game has been fun.
9 people found this review helpful
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What's new

Leaderboards: Compete with players around the world! Our new leaderboards allow you to track your performance and see how you stack up against others. Climb the ranks and showcase your skills!
Content rating
Rated for 18+
Simulated gambling, In-game purchases
In-game purchases
Learn more

App support

About the developer
Basement Software LLC
support@basement.software
1215 180th Pl NE Bellevue, WA 98008 United States
+1 253-350-2805

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