Free slot: SixSixSix

SixSixSix Slot Overview 

Join Beelzebub and Balthazar in SixSixSix, a humorous slot set in the underworld.  

Filled with wicked bonuses, the game boasts a thematic 16,666x max win, which is available in every game mode.  

The base game is slower-paced than a lot of similar slots, but the high variance rewards patient players who recognize that big wins are always on the horizon.  

Basic Information 

Developed by Hacksaw Gaming in 2024, SixSixSix comes with 14 fixed paylines across its 5x3 layout. Landing 3 or more of the same symbol on one of these lines grants you a win.  

The slot has a decent betting range of €0.10 to €50. While this may be on the lower end for high value players, we feel like the range suits the high-risk nature of a game this volatile.  

Theme and Graphics 

SixSixSix does a fantastic job of creating an underworld-themed game with a unique personality.  

In terms of sound design, the eerie silence of the base game contrasts perfectly with the cartoonish sound effects, creating a fun, lighthearted experience. Not what you might expect when making deals with the devil. 

And while the general color scheme is immediately reminiscent of other Hacksaw Gaming titles, the design of the symbols and the pole-dancing demons add to the comedic take of the afterlife.  

RTP and Volatility 

SixSixSix has a high volatility. This means that players can expect infrequent, but high-paying wins. Meanwhile, the Base Game RTP is 96.15%, which is decent when compared to other slot games. 

However, in this game, both the variance and the RTP change slightly when using the Bonus Buy feature. We explain this in more detail later in this article.  

Symbols and Paytable 

The symbols in SixSixSix nicely tie in with the cartoon elements of the slot. 

There are 5 low-paying symbols, which all pay 3x your bet for landing 5 on a payline:  

• Bones 

• Axe 

• Cigarette Box 

• Cocktail Glass 

• Bible 

The 5 higher-paying symbols have different payouts. For 5 on a line: 

• Bottle of Poison & Ghoul: 10x 

• Wolf 1 & Wolf 2: 15x 

• Devil Hand Gesture: 50x  

There are also two Wicked Wheels, represented by a Blue 6 and Red 6 respectively.  

Red Wicked Wheels only appear in Bonus Rounds, and offer slightly different symbols than the more common Blue Wheels: 

How to play the slot 

This game runs on a 5x3 reel set-up with 14 fixed paylines. In the base game, wins are awarded for landing 3 or more of the same symbol within one of these lines.  

You can also use the autoplay feature to run up to 1,000 rounds with the same bet amount.  

Game Mechanics 

In SixSixSix most of the features revolve around one main mechanic: the Wicked Wheels. 

In the base game, Blue Wicked Wheels spawn when a Blue 6 symbol lands on the reels. These have the potential to offer several types of payouts, including multipliers, the maximum win, and Bonus Rounds.  

To trigger a Bonus Game, you need one Red 6 symbol to land on a Blue Wicked Wheel. If you land multiple Red 6s on multiple wheels, you will trigger higher-value bonus rounds.  

Feature Symbols Explained 

The main feature symbol in this game is the Red 6 which appears in Blue Wicked Wheels. 

Only one Red 6 appears per Wheel, and hitting it triggers the Speak of the Devil feature, plus 10 Free Spins.  

However, if you happen to land multiple Wicked Wheels, and hit the Red 6 twice or three times, you can also unlock the other bonus rounds.  

SixSixSix Slot Features and Bonuses 

The magic of SixSixSix lies in its many bonus features. 

Speak of the Devil 

This game mode begins when you land one Red 6 symbol on a Blue Wheel.   

You are given 10 free spins where both Red and Blue Wicked Wheels have a chance of landing on the reels.  

If you choose to Deal With The Devil, the number of free spins may be different.  

Let Hell Break Loose 

Triggered with two Red 6 Symbols, this round begins with 10 Free Spins and increases your chance of finding Red Wicked Wheels. Blue Wheels cannot be found.   

What The Hell 

The final bonus feature guarantees a Red Wicked Wheel with every spin. You can trigger this feature with 3 Red 6s in the base game. 

You cannot Deal with the Devil during this round.  

Deal With The Devil 

At the beginning of the Speak of the Devil and Let Hell Break Loose bonus rounds, you are given a choice. Accept the 10 free spins, or gamble with the devil.  

If you choose to gamble, a Deal Wheel gets spun which can either increase or decrease your spins.  

Hit another Red 6 symbol on the Deal Wheel to get upgraded to a more valuable bonus round. 

Bonus Buy Feature 

As we referenced earlier, you can use the Bonus Buy Feature to manually trigger bonus games. However, doing this slightly affects the volatility and RTP of each bonus.  

The table below explains how: 

Play Options 

SixSixSix has both a real money and demo version available to play at many online casinos.  

In our opinion, the best places to try this game are Millionz and RealSpin, but be aware that geographical restrictions may apply.  

Play for Real Money or Try the Demo 

If SixSixSix’s features seem daunting or confusing, we suggest exploring the Demo Version first. This will allow you to judge the game for yourself before wagering your own money.  

Then, if you find the game suitable for your playstyle, you can jump into the Real Money Version for a chance at beating the devil at his own game.  

Demo Features and Mobile Compatibility 

The Demo Version of this game perfectly renders all the features and bonuses in SixSixSix. And with the Bonus Buy mechanic, we had a lot of fun testing out the various game modes available.  

We did, however, have some trouble playing this game on mobile. Hacksaw Gaming slots are typically known for being mobile-friendly, but when loading SixSixSix on an iOS device, the Safari UI blocked the buttons, making play impossible.  

We did not have this issue when using an Android device.   

SixSixSix Compared 

SixSixSix is a great addition to Hacksaw Gaming’s broad library.  

The game’s personality and humor help it fit in among their cheerier titles, while the overall themes complement their darker slots such as Pray for Three.  

Similar Slots You Might Like 

• Lilith's Inferno by AvatarUX: This slot is designed for players looking for a worthy battle. If you’re a fan of SixSixSix’s bonus features, you will enjoy fighting demons in this game too.  

• Fire in the Hole by Nolimit City: For players who enjoy high volatility slots, this game and its sequels, Fire in the Hole 2 and Fire in the Hole 3, have explosive features and high potential wins.  

• Charlie Chance xReelz by Play’n GO: If you’re looking for some more lighthearted fun in hell, join Charlie Chance on his many adventures, featuring games like Charlie Chance in Hell to Pay, and Charlie Chance and the Curse of Cleopatra.  

Summary & Final Verdict 

SixSixSix is not for the faint-hearted.  

By that, we mean that casino lovers who enjoy the risk of high variance games can get a lot out of a slot like this, but we struggle recommending it to casual players.  

Overall, we feel like SixSixSix delivers excellent quality bonus features which are slightly complicated by the overlapping mechanics and triggers.  

Meanwhile, with only 14 paylines and equal payouts for many regular symbols, we think that the base game lacks diversity. The chance to earn the max win in any game mode is a nice touch though.