4 of a King

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Rules and Gameplay

4 of a King slot by Endorphina offers a straightforward and engaging gaming experience that mirrors the feel of classic, land-based casinos. The game is set on a 5×3 grid with 10 betways, allowing players to bet from $0.01 to $100 per spin. Gameplay is enhanced by the intuitive control panel at the bottom of the game screen, where players can easily adjust their bet amounts and the number of active paylines. The slot also features an Auto function for continuous spins and a coin value selector for fine-tuning bets, ensuring both casual players and high rollers can enjoy the game at their own pace.

Bonus Features

4 of a King comes with several exciting bonus features that add to the thrill of the game:

  • Wild Symbol: The Token symbol acts as the Wild, substituting for any other symbol to form winning combinations. It can also expand to adjacent reels, significantly increasing the potential for big wins.
  • Expanding Wilds: Whenever a Wild symbol appears, it expands to cover up to three reels, creating more opportunities for winning combinations.
  • Gamble Feature: After any win, players have the option to gamble their winnings in a card game against the computer. Choosing a card higher than the dealer’s doubles the winnings, adding an extra layer of excitement.


The game features a mix of symbols designed to complement its vintage casino theme:

  • Card Colors: Blue, Green, Yellow, Red cards are the lower-value symbols, flipping around to reveal Kings in winning combinations.
  • Croupiers: Male and female croupier symbols represent higher-value icons.
  • Casino Goers: The highest-value symbols depict a couple of casino goers amassing fortunes, with a combination of five offering a payout of 1,000 times the original bet.


The game features 10 betways, giving players multiple opportunities to form winning combinations across the reels. Paylines are not fixed, allowing players to adjust the number of active paylines for each spin, which adds an element of strategy to the gameplay. This flexibility ensures that players can customize their betting strategy according to their preferences and bankroll.

Pros & Cons

Pros Cons
Engaging vintage casino theme Lack of complex bonus features
Expanding Wilds increase winning potential Does not offer Scatter symbols or multipliers
High RTP of 96% Theme might not be unique enough for some players

Minimum and Maximum Bet

The 4 of a King slot accommodates a wide range of players by offering a minimum bet of $0.01 and a maximum bet of $100. This flexible betting range makes the game suitable for both casual players looking for fun and high rollers seeking big wins.

Game Jackpot

While 4 of a King does not feature a traditional jackpot, it offers players the chance to win up to 1,000 times their original bet through its highest-value symbols. The game boasts an RTP (Return to Player) of 96% and is classified as having medium variance. This combination offers a balance between the frequency and amount of wins, catering to a wide audience of slot players.

About Provider

Endorphina, the provider of 4 of a King is a well-recognized studio in the online gaming industry. Known for developing slots with thrilling engines and fantastic artwork, Endorphina has been releasing successful titles since its inception. Their games are celebrated for innovative themes, engaging gameplay, and reliability, ensuring a premium gaming experience for players around the world.

How To Play

  1. Set Your Bet: Adjust the coin value and the number of paylines you wish to activate. You can bet from $0.01 to $100 per spin.
  2. Spin the Reels: Once you’ve set your bet, press the Spin button to start the game. You can also use the Auto function for continuous gameplay.
  3. Watch for Winning Combinations: Match symbols on active paylines to form winning combinations. The game pays for combinations of three or more matching symbols.
  4. Utilize the Wild Symbol: The Token symbol acts as the Wild and can substitute for other symbols to help form winning combinations. It also expands to adjacent reels for increased winning potential.
  5. Gamble Your Wins: After any win, you have the option to gamble your winnings in a card game against the computer for a chance to double your payout.


4 of a King by Endorphina is a classic slot game that offers a nostalgic casino experience with its vintage theme and straightforward gameplay. The game’s expanding Wilds and gamble feature add layers of excitement to each spin, while the flexible betting range caters to a broad audience of players. Despite the absence of complex bonus features, the high RTP and medium variance ensure a balanced and rewarding gaming experience. Whether you’re a fan of traditional casino slots or looking for a game with simple yet engaging mechanics, 4 of a King promises hours of entertainment and the chance for significant wins.