Published on
June 24, 2017

Natalia Duarte
June 24, 2017
Natalia is in charge of creating content for gambling-world. With over five years of experience in the iGaming industry, working on game development and design, she is responsible for evaluating the sites we recommend on the platform and writing the most detailed game guides you'll find in Portuguese. She is also a dedicated fan of casino games and is always learning something new about them. #ReliableOnlineCasino
[email protected]
Legally approved content

Easy to comprehend, simple to play, and with high chances of winning. It's no wonder that blackjack, or 21 as it's known in South Africa, is one of the most renowned card games worldwide and a favorite in casinos. By familiarizing yourself with the rules and mastering a few strategies, you can quickly become skilled at the game and wager with real money in online blackjack games. Our guide provides all the necessary information to grasp the intricacies of 21, offering tips and game strategies, along with a list of the top online casinos to play blackjack online.

Play online blackjack!

Nowadays, there is no need to travel abroad to a casino to play blackjack. You can effortlessly discover numerous websites where you can play 21 online and even practice before betting with some free games. However, with so many alternatives, how can one determine the top online casinos? This is a common query that everyone encounters when they want to play with real money for the first time. Therefore, here we have compiled the most secure and reliable casinos for you to play blackjack online.

To excel at playing online blackjack, thoroughly research your options for online casinos beforehand. The ideal betting establishments for wagering your funds should consistently offer the following advantages: 1. Reliable and secure platforms that prioritize the safety of your personal and financial information. 2. A wide selection of blackjack variations to cater to different preferences and skill levels. 3. Fair and transparent gameplay, ensured by the implementation of random number generators (RNGs) and regular independent audits. 4. Attractive bonuses and promotions that provide additional value and enhance your gaming experience. 5. Responsive customer support that is available 24/7 to address any queries or concerns promptly and efficiently. 6. Convenient and flexible banking options, allowing hassle-free deposits and withdrawals. 7. User-friendly interfaces and intuitive navigation for seamless and enjoyable gaming sessions. 8. Mobile compatibility, enabling you to play blackjack on the go from your smartphone or tablet. Remember, by thoroughly evaluating these factors, you can make an informed decision and choose the best online casino to maximize your chances of success in playing blackjack.

Melhores casinos online para jogar Blackjack

Comfortable payment and withdrawal options for players.

A wide range of blackjack games, including mobile and live Blackjack games, are available for players to enjoy.

Security and transparency for your users;

Flexible online customer service hours.

The website offers content and information in multiple languages, including Portuguese.

The top 9 tips from our Blackjack (21) guide that you can't miss

Are you familiar with the rules of blackjack and feel ready to play? Do you have your strategies at your fingertips? Well, before you start playing 21, take a moment to read through this list of the most essential tips that you mustn't forget:

É possível ganhar milhares de reais com apenas uma mão no Blackjack.
O quanto você ganha é sempre influenciado da sua aposta original.
Estratégia é importante no jogo. Diferentemente de jogos baseados exclusivamente na sorte, como o bingo ou os data , no blackjack você pode ter estratégias que te ajudarão a aumentar suas chances de vitória.
O jogo é fácil, simples, rápido e bastante divertido.
O objetivo do jogo é somar 21 pontos com suas cartas.
Se suas cartas ultrapassarem os 21 pontos, você perde.
Você joga sempre contra o dealer, que representa o casino.
Existem vários tipos de Blackjack, mas o jogo clássico é o que você mais vai encontrar nos cassinos online.
Depois que você aprende como jogar 21, você vai adorar aprender estratégias

Variations of online blackjack

If you're looking to play blackjack online, you'll come across various versions of the game. It's important to familiarize yourself with these versions and their unique features before placing your bets, as the rules and strategies may differ for each one. Below, we've compiled a list of the primary variations of the 21 game:

Classic Blackjack

Blackjack is widely played in most casinos, both offline and online. Its rules are relatively easy to grasp. If you still have any uncertainties about how the game works after reading this guide and are unsure where to play online blackjack, feel free to visit our page dedicated to the 21 game.


In this variation of blackjack, players do not have any visibility of the dealer's cards prior to making their decision. This aspect of the game adds a layer of complexity, making it more challenging to devise a strategy. It poses a greater difficulty for players as they are unable to assess the full picture and must rely solely on their intuition and luck. Consequently, this form of blackjack demands a higher level of adaptability and quick thinking from participants.

Face Up 21

In this version of blackjack (21), the dealer's two cards are revealed, enhancing the convenience for players to strategize their next move. This favorable alteration grants players an opportunity to ponder and make calculated decisions.

Match Play 21

In the 21-card deck of No Match Play, the number 10 cards are removed. Instead, special game bonuses are introduced in their place.

Multi-hand Blackjack

In this game, you have the option to play with multiple hands, meaning you can place more than one bet simultaneously. Many gamblers have a strong preference for this particular variation of blackjack.

How to play 21? Learn and start earning with Blackjack!

Blackjack, a card game that is incredibly easy to play, has gained immense popularity through its depiction in American movies. One such movie, 21, showcases a group of young individuals led by a professor who spend their weekends playing blackjack in the casinos of Las Vegas, where such establishments are legally permitted. Although its origins remain shrouded in mystery, the game has filled casino tables with enthusiasts since the 20th century, and recently, it has also found its place and gained popularity as one of the most renowned online casino games. In addition to its simplicity, blackjack is considered one of the easiest games to win in online casinos. The advantages it offers over other games are as follows:

  • There are variations of the game, but the basic premise is always the same: to win, accumulate 21 points or get closer to it than the dealer.
  • By employing certain gaming strategies (such as mastering card counting in blackjack), you significantly enhance your odds of achieving substantial victories.
  • With the option to play for free in some online casinos , you can practice your skills before betting real money.
  • You play solely against the dealer.
  • In online games, you are not bothered by other players at the table.
  • If you know the game well and how to play, your chances of winning are high because players have some advantages against the dealer (see more details about this in the blackjack rules section below).
  • Roulette, o videoPoker e as máquinas caça-níqueis. Isso significa que, em média, os jogadores têm uma maior probabilidade de receber um retorno em suas apostas ao jogar Blackjack online do que em outros jogos de cassino. roulette .

In the game of blackjack, players don't compete against each other; instead, they play solely against the dealer, also known as the croupier. Prior to receiving their cards, players place their bets. Subsequently, each player and the dealer are dealt two cards. It is of utmost importance to understand that each card in the deck of 21 holds a numerical value, and the objective of the game is to reach a sum of 21 (never exceeding it) with your cards. In other words, the game revolves around the value and total sum of the cards, as players compare their own cards to those of the dealer, even if there are other participants (which is typically the case) at the table.

The objective of the game is to reach a total of 21 or get as close as possible. If the cards exceed this sum, the player or dealer automatically loses. The ultimate hand, however, is called blackjack, which occurs when you exactly sum up to 21 points with the following cards: 10 + Queen, Jack, or King or 10 + Ace = blackjack! Whoever achieves the blackjack wins the bet.

Blackjack is not merely a game of chance, even though some may contend that being lucky when receiving the cards influences the outcome. However, even with unfavorable cards, players who possess strategies can still emerge victorious. It simply requires knowing what to do in light of specific circumstances. To familiarize yourself with the value of 21 cards and further information about the game itself, please visit our guide on how to play blackjack.

Rules of blackjack (21)

Since the game appears to be ancient (its exact origin is not well defined, although there are records of the 17th century of the game 21), naturally there are numerous variations of blackjack. However, these variations are typically minor and do not change the fundamental rules of the game.

  • Players place bets against the dealer.
  • Each person will receive two letters.
  • Based on the sum of the two cards, the player can choose whether to draw another card to improve their total (an option called "hit"), or if they prefer to keep only their initial two cards ("stand").

The betting phase initiates the game of blackjack. Each participant places their individual wager, as they are essentially competing against the dealer. In the realm of live casinos, it is commonplace to find other players at the table, whereas online casino options offer the possibility of playing against a computerized card dealer or opting for the live dealer alternative, wherein an actual dealer deals the cards and is broadcasted through video to the players.

Once the bets have been placed, the dealing of the cards commences. Two cards are distributed to each player, along with two cards to the dealer. The players' cards are revealed (facing up), whereas only one of the dealer's cards is exposed, and the other remains hidden during this initial phase. Subsequently, after receiving the cards, players have four available options:

Pedir uma carta (ou mais) ao dealer, para aumentar sua soma. Lembre-se que se a soma passar de 21, você perde. Os jogadores geralmente escolhem o hit quando tem uma soma de 11 pontos ou menos.
Permanecer com as duas cartas que você já tem. Normalmente se recomenda escolher o stand quando você tem uma soma de 16 pontos ou mais.
Double down
Dobrar a aposta. Isso é aceitável somente quando você tem uma ótima mão e está confiante do seu jogo.
Dividir as suas cartas. Essa opção é somente destinada aos jogadores que receberam duas cartas iguais, como, por exemplo, dois 6 ou dois 4. Ao escolher o split, o jogador divide seu jogo em duas apostas separadas, recebendo mais uma carta para cada jogo. Isso requer que você aposte a mesma quantia em fichas da primeira aposta.

When it comes to deciding which path to take, it is crucial to assess the dealer's open hand before making your decision. Take a deep dive into this matter in the section provided below, where you can find valuable insights on how to come out on top in the game of blackjack.

Learn how to win at blackjack.

Becoming a skilled blackjack player doesn't require much between a novice and an experienced player, just practice time and dedication to learning game strategies. If you're looking to have fun betting on online 21, you'll soon realize that within a few weeks, you'll have a good grasp of how the game works, and you'll even have developed your own winning techniques.

In online blackjack, just like in live blackjack at casinos, the house holds an edge over the players, typically around 8%. Although it's not a significant advantage, there are techniques one can learn to substantially reduce it. However, it's worth noting that no strategy is 100% foolproof, and you will always have a chance of losing your bet. Keep in mind that the house always has the upper hand, but with the right approach, you can improve your odds and make the most of your blackjack experience.

The game's advantages kick in right from the start, as it is the player who must take the first action. Hence, they have a higher likelihood of losing first by going over 21 points. On the other hand, there are a few advantages that players have over the dealer: the dealer never has the option to split their bet, they can never double down on their bet, and they must always request another card when their total reaches 16 points.

Strategies to win more in online blackjack

The player's decisions in blackjack will determine when to hit, stand, double down, or split. No strategy can guarantee victory; it can only increase the player's chances. It's worth noting that luck plays a crucial role in 21, with strategy being a means to enhance the player's odds. Numerous strategies exist, and one of them is card counting (find out more in our comprehensive guide on card counting in blackjack).

The most popular approach, commonly referred to as the fundamental strategy, is the optimal technique to enhance your odds of triumphing in blackjack. A group of seasoned players devised a chart that outlines the most favorable actions to take based on calculating probabilities for each feasible combination of two cards you might receive, considering the dealer's visible card. If you commit this chart to memory, your prospects of prevailing will significantly increase. While it doesn't ensure an absolute victory, it undoubtedly constitutes a superb strategy.

Tips for novice Blackjack players.

  • Practical play 21 online for free Before playing and betting your money, make sure you are familiar with the rules of 21.
  • Bet responsibly. Set a betting limit and play at tables that do not exceed this limit.
  • Learn game strategies and the value of 21 cards.
  • Always think before you act. Don't play impulsively.
  • Don't waste time learning how to count cards in 21 if you're going to play online, as the cards are shuffled after each hand.
  • Play for fun, not for financial gain.
  • If the dealer is showing low cards like 4, 5, or 6, and you have a more favorable hand, your best option may not be to "hit", but rather to "double down", as low cards increase the chances of the dealer going over 21 points.
  • When you have a strong hand, totaling 17 points or more, always choose to stand, as if you request an additional card, the chances are high that you will exceed 21 points.
  • Always split hands with two aces or two eights, as it increases your chances of winning both bets. Two aces only add up to 12, while separate aces can become strong hands. Two eights, on the other hand, add up to 16, which is considered the worst possible hand. By splitting them, you have a chance to make stronger hands.
  • Never split two 10s because they add up to 20 points, which is a very good total to risk.

Return to Player in the game of Blackjack.

Blackjack has the lowest payout percentage (RTP - return to player) among casino games, which is why it is so popular among players. Substantial amounts can be won with the game and the house edge can also be reduced to almost nothing with a few strategies. By implementing the tips and strategies provided in this guide, you will surely tilt the odds in your favor.

Discover live online blackjack

There are two ways to play online blackjack. The first, more common in online casinos, is a computer game, similar to a slot machine game. There is no deck of cards and no dealer, everything is done by the computer. The cards are drawn according to a random system. The second way to play 21 is through a live casino, meaning you play by watching a real-time video in a casino, where you can bet with a real dealer who deals the cards to the players. They call this live blackjack. Multiple players can play at the same table. The idea of live casinos is to provide users with a more realistic atmosphere when they are betting.

You can play online blackjack games directly from your mobile or tablet, allowing you to play wherever you are. This option is definitely provided by the top online casinos.

Glossary - Key Terms in Online Blackjack


Bust: Termo em English que significa que o dealer ou o jogador ultrapassaram os 21 pontos.


Contar cartas: É uma estratégia de jogo que memoriza as cartas já jogadas para saber quais cartas ainda se encontram no baralho e quais as chances do dealer ultrapassar os 21 pontos. Essa estratégia não funciona para jogos de Blackjack online, já que as cartas são embaralhadas a cada rodada.


Dealer: É o crupiê, a pessoa que dá as cartas. Nos jogos de Blackjack online, não existe crupiê, e as cartas são sorteadas por um sistema baseado na aleatoriedade.
Double down: Dobrar a aposta.


Face cards: Se refere às cartas da Rainha, Rei e Valete.


Heads up: Se diz quando só há um jogador na mesa. A maioria dos jogos de Blackjack online são jogados desde modo.
Hit: Pedir uma carta (ou mais) ao dealer, para aumentar sua soma.
House hold: É a vantagem da casa.


Split: Dividir as suas cartas.
Stand: Permanecer com as duas cartas que você já tem.

Challenge yourself! Play blackjack online!

Playing online blackjack (21) doesn't require specific skills like poker, but there are strategies to excel in the game. If your goal is profitability, it's important to familiarize yourself with these strategies and practice them extensively. Always remember to gamble responsibly, respecting your financial limits and maintaining control over your bets. Keep in mind that it's crucial to play within your means and exercise caution when placing wagers.

Selecting the online casinos in which you will play blackjack should also be done with caution. Evaluate whether the casino is secure and trustworthy before registering and see what deposit and payment options it offers. If the options are not suitable for you, it can hinder your gameplay. In our assessment of online casinos, you will discover the finest choices of online casinos. Take advantage and good luck!

Nelson Duarte
Nelson Duarte
(Brazilian Lawyer, 36 years of experience)
Read and approved: July 23rd
Updated: July 23
Nelson Duarte is the legal consultant of The website's content has been reviewed and is in compliance with current Brazilian legislation.
The informative and educational content of this portal complies with Brazilian legislation.
Mr. Duarte
[email protected]