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Most often, video slot developers offer online casino customers three- or five-reel slot machines, the most sought-after ones. However, sometimes there are models with one or more additional reels used for other purposes.
With the help of special pictures on the rows, various prize functions are launched, making the gameplay more diverse and interesting.
Of course, they are worthy of slot machine fans.

Best video slots with bonus reels


This article by considers similar slot machines. All of them were made by well-known developers of online gambling software. Note that only games that include extra reels with bonus options are discussed.

As per usual, we’d like to warn our readers that this isn’t a rating, and the machines are listed in random order. Detailed reviews of all games can be found in separate publications by clicking on the links.

Hot Safari

This game was developed by Pragmatic Play. Ten basic symbols and two special symbols are presented on the five main reels. Multipliers from x1 to x10 are seen in the sixth reel. An additional coefficient from the middle cell is also taken into account when determining the prize amount for each of the formed combinations.

In addition, a special symbol is presented on the sixth reel. It launches the Super Wild bonus game, during which wild symbols appear in randomly selected positions on all reels. Read the details in the review of the Hot Safari slot.

Fortune Hill

This 3D slot about fairy tale characters was released by Playtech. To the right of the five main drums, another wheel can be seen. It’s made to appear like a water mill and shows additional x2, x3 and x4 multipliers, as well as special symbols that activate special features.

At the same time, not all cells of the sixth reel of the Fortune Hill slot machine are filled with symbols. Some sectors are empty. There is an arrow in the centre. If the arrow points to some element, the bonus reel is activated in the current round. When a multiplier appears, it’s involved in the calculation of payouts for the combinations. Other symbols trigger free spins or start bonus games.

Steampunk Luck

Inspired by the steampunk fantasy genre, the developers from Skillonnet released the original Steampunk Luck slot machine, which also uses an additional reel. It starts spinning if three scatters appear in the main five reels.

In this case, a repeated free spin with the sixth reel is launched. It can produce an additional multiplier, which is considered when determining the payout amount. This indicator can reach x50. Additionally, it provides extra benefits dissected in the review of the Steampunk Luck slot.

X-ra Bonus Reels

The very name of the X-ra Bonus Reels slot machine, which was released by iSoftBet, points at it featuring two additional bonus reels. They’re located to the right of the three main columns.

On the reels, there are additional multipliers from x2 to x10 and a word ‘Pay’ with numbers from 2 to 10. Multipliers are used during winnings calculations by chains, and Pay gives a fixed payout in coins of the denomination specified before the start of the spin.

Super Lucky Reels

This is another iSoftBet machine with three basic reels and two additional columns. Winning chains of identical symbols are formed on the main reels, while special symbols appear in the fourth and fifth reels. They’re activated only when placing a certain bet.

Special symbols can help you win free respins, bonus payouts of up to one thousand coins, and multipliers up to x10. The multipliers are used when calculating winnings from combinations. Read more in the Super Lucky Reels slot review.

Super Tricolor

A yet another game from iSoftBet; it also features an extra reel that triggers bonus features. Standard and special symbols appear in three basic columns, while bonus symbols appear in the fourth reel.

The symbols can indicate payouts in coins, trigger free spins, start the bonus round, and activate additional multipliers that increase the current payout. This reel is activated only when playing on five lines.

Charms and Clovers

In the Charms and Clovers slot from Betsoftgaming, the sixth reel is used both as the main reel and as a bonus reel. In other words, regular symbols and special elements that appear in the sixth reel trigger bonus features.

Basic pictures in the sixth column allow you to form combinations made up of six pictures. Special symbols fill all positions on the visible part of the reel and trigger bonus games.

The prize rounds are:

  • Wheel of Fortune with different cash payouts and progressive jackpots,
  • different types of free spins with advanced options,
  • thematic bonus games with the possibility of large prizes.


This new slot machine was released by Playson for Halloween. It has three witches making a magic potion on the reels. The fruit machine has numerous bonuses, including interesting free spins with an additional Ghost Reel.

The sixth reel is placed on the far left. Winning combinations can start with it and contain up to six elements. Additionally, chains can start from the first standard reel, which increases the likelihood of receiving prizes.

Sizzling Hot 6 Extra Gold

This is a new slot machine model in the popular Sizzling Hot series from Novomatic. The number 6 in its name alludes to the presence of the sixth reel, which opens wide opportunities for customers. To use it, you make an additional bet equal to the main one.

Turning on the sixth reel in Sizzling Hot 6 Extra Gold activates combinations on both sides of the screen. In addition, it allows you to form chains of six pictures. Such combinations have high coefficients for payouts. There are also other prizes in the game, which are described in the review.

Queen of Gold


Next, let’s discuss the Queen of Gold slot machine from Pragmatic Play. In addition to the five main reels, it has a sixth reel that features additional multipliers and a special wild. The coefficients are used in the calculation of payouts for combinations, and the wild takes the game to the next level.

A multi-level system suggests an increase of multipliers on the sixth reel. The transition to a new level happens when you collect five points within twenty-five spins. The joker can also instantly switch the level. Find out the details in the Queen of Gold slot review.

Panther Queen

This model was also created by Pragmatic Play. In addition to the five main reels, the sixth column is used here. Multipliers from x1 to x10 are used in it. The coefficient dropped in the central position is considered when calculating the prize. An image of a pyramid may also appear here, which triggers free spins.

In addition, the Panther Queen slot machine has other interesting bonuses. In free spins, the middle three columns are filled with giant (3×3) symbols, and Wild in any round can expand by three positions vertically. Five reels with wilds mean a prize of one hundred thousand coins.

Big Thunder

This game with a prize reel was released by Ainsworth. The video slot is designed in King Kong style, although it isn’t dedicated to any particular feature film. The model has rich gameplay features, including special symbols, fixed jackpots, bonus spins, and extra multipliers.

In normal game rounds, only the golden crown symbol can appear on the sixth reel. If a combination of five identical symbols is formed with it, you will receive one of the four jackpots. During free spins, the sixth reel increases in size. Multipliers and bonus symbols appear on it.

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