Blackjack 21: casino card game
Contains adsIn-app purchases
4.6star
15.1K reviews
500K+
Downloads
Teen
info
About this game
This is a free authentic casino Blackjack gambling game, also known as twenty-one or 21, that you can play against the dealer.
Enjoy a classic casino card game with Popular Las Vegas rules just like at the real casino. You need to download this app if you like to play slot machines or slots and blackjack or just want to learn how to play Black Jack 21 in a casino and practice your gambling skills to be prepared for your Vegas trip.
Top Features of the game
- unlimited free chips
- fair game 100% truly random card shuffler with deck shuffle animation
- authentic Blackjack experience
- Double Down, Splits, Insurance, and Surrender
- by default, the game is played with a single deck
- simple game easy to play with smart controls
- hints based on Blackjack strategy charts
- game statistics and free chips after bankrupt
- lit graphics large cards and easy to play
- learn how to beat the casino and how to play blackjack at the casino
- easy to play 100% fun addictive and challenging game
Basic rules and how to play
In Blackjack, you are trying to build a hand with a higher value than a dealer without going over 21. Aces may count either 11 or 1. Face cards are worth 10, and all other cards are worth the number they show.
Any hand containing an Ace and a face card is called a Blackjack.
NOTE: This is NOT a gamble game for real money.
- The game is intended for an adult audience and this card game does not offer "real money gambling" or an opportunity to win real money or prizes.
Please let us know what you think of this card game and rate us.
Created by CYBERNAUTICA
Privacy Policy: https://cybernautica.cz/privacy-policy/
Terms of Service: https://cybernautica.cz/terms-of-service/
Enjoy a classic casino card game with Popular Las Vegas rules just like at the real casino. You need to download this app if you like to play slot machines or slots and blackjack or just want to learn how to play Black Jack 21 in a casino and practice your gambling skills to be prepared for your Vegas trip.
Top Features of the game
- unlimited free chips
- fair game 100% truly random card shuffler with deck shuffle animation
- authentic Blackjack experience
- Double Down, Splits, Insurance, and Surrender
- by default, the game is played with a single deck
- simple game easy to play with smart controls
- hints based on Blackjack strategy charts
- game statistics and free chips after bankrupt
- lit graphics large cards and easy to play
- learn how to beat the casino and how to play blackjack at the casino
- easy to play 100% fun addictive and challenging game
Basic rules and how to play
In Blackjack, you are trying to build a hand with a higher value than a dealer without going over 21. Aces may count either 11 or 1. Face cards are worth 10, and all other cards are worth the number they show.
Any hand containing an Ace and a face card is called a Blackjack.
NOTE: This is NOT a gamble game for real money.
- The game is intended for an adult audience and this card game does not offer "real money gambling" or an opportunity to win real money or prizes.
Please let us know what you think of this card game and rate us.
Created by CYBERNAUTICA
Privacy Policy: https://cybernautica.cz/privacy-policy/
Terms of Service: https://cybernautica.cz/terms-of-service/
Updated on
Available on
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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.
Ratings and reviews
4.6
13.8K reviews
A Google user
- Flag inappropriate
October 20, 2025
Fun to pass the time. I've noticed a tendency for the game to make you lose any time you bet more than half though, which is unrealistic and not fun. Also the game doesn't call blackjack like at least half the times I get it. Know what else isn't fun? Ads. Especially with no permanent solution, but a "subscription" requirement. That's gross.
CYBERNAUTICA
October 20, 2025
Hi, thanks for playing with us. Unfortunately, ads are needed to keep the blackjack free for everyone. The ads stop showing after any in-game purchase. Have a nice day :)
Todd Edegerton
- Flag inappropriate
September 30, 2025
It's a very simple and enjoyable game. Not too sure about the odds, looks like just a single deck instead of the 5 I'm accustomed to. My only complaint about the game is that I can't figure out how to turn off the hint/suggestion function. I know how I want to play my hand, and find it distracting, and exceedingly annoying, especially when it's right. The ads come too often, are too long, and tedious to get rid of, but that's true about almost all free online games.
4 people found this review helpful
CYBERNAUTICA
September 30, 2025
Hello, thank you for playing blackjack with us. Unfortunately, ads are needed to keep the game free. You can remove the ads by any purchase in the shop. We wish you all the best!
Cyndi June
- Flag inappropriate
October 21, 2024
It's a great learning game for blackjack tables in vegas. I understand that free games have to have ads to support their developers whatnot. Trouble is with this game the more you play the more ads you get. I'm on level 30 right now and it seems like every time I win a hand and add pops up not good. Other than that this is an excellent blackjack game
68 people found this review helpful
CYBERNAUTICA
October 21, 2024
Hello, thank you for playing blackjack with us. Unfortunately, ads are needed to keep the game free. You can remove the ads by any purchase in the shop. We wish you all the best!
What’s new
Thank you for playing the best Blackjack 21 app for free.
App support
About the developer
CYBERNAUTICA s.r.o.
games@cybernautica.cz
988/2 Nové sady
602 00 Brno
Czechia
+420 733 731 087
