Sweet 666

Review, Demo Play, Payout, Free Spins & Bonuses

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  • Glossy graphics & fun soundtrack
  • Cascading wins to up the anticipation after each spin
  • Free spins round with up to 7x win multipliers
  • Generous top 400 coin stake
  • Disappointing 94.35% RTP
  • Min 0.50 stake might not be low enough for budget gamers
  • Only one bonus feature

Sweet 666 is a candy-themed slot from the developer Aspect Gaming played on a 6x6 grid. It features cascading wins with win multipliers and a free spins round with a top 7x multiplier. The variance isn’t known but the RTP is estimated at 94.35%.


Get ready for a sugar overload with Sweet 666, a candy-filled slot from Aspect Gaming. This is a fresh release for 2021 and the developers have cleverly combined the simple fun of mobile games with casino slots to bring players a sweet treat with vivid colours and glossy graphics. Breaking away from traditional slots, Sweet 666 has a 6x6 game board filled with different shapes, sweets and colours, with cascading wins that grant increasing multipliers to make this slot as potentially rewarding as it is unhealthy! 

There are 10 colourful base game symbols of various shapes and colours, like a yellow heart, red belly bean, orange lollypop head and pink flower. The multicoloured swirl is the wild, which substitutes all symbols to help generate winning combinations.

A win is formed with 3 or more adjacent matching symbols that touch vertically or horizontally on the reels. After the payout, the symbols burst and disappear so that the symbols above can drop down and new symbols can fall from the top. You'll notice some spots on the grid are greyed out and disabled. For each additional round, 4 of the current disabled spots will be enabled until all spots are enabled, and additional winning combinations will explode in each round until no further winning combinations are possible. After the payout of each round is made, the applied win multiplier will increase by 1x, up to a maximum 5x.

This slot has a Wintrack function, showing mini doughnuts in red, yellow and blue to represent a base game bin, non-win and feature triggered respectively. 

Theme, Graphics & Soundtrack

This is a food themed slot for those with a sweet tooth. The game is centred in the middle of the screen when playing on a desktop/laptop to look like a mobile screen. The background is a blur of colour, while the game itself features candy floss pinks, sprinkles and lollipops. The 6x6 grid is likewise vibrant, while the symbols look colourful and glossy, almost good enough to eat. 

A tinkly soundtrack injects some care-free happiness into the game. This is a happy-go-lucky kind of slot with slick contemporary aesthetics and upbeat sounds to whisk you away from reality as you spin the reels.

Sweet 666

Sweet 666 RTP and Variance

This has a 94.35% RTP, which is rather disappointing and below the 96% average we prefer to see. Unfortunately the volatility isn’t known, but from our own gameplay we’d anticipate reasonable variation in terms of payouts so perhaps a low to medium variance.

How to Play Sweet 666 

  1. Familiarise yourself with the game rules, which can be found by clicking the settings cog to the left of the spin button, followed by the ‘i’ for information.
  2. To adjust the bet, click the $ button, which opens the bet settings screen.
  3. Use the +/- to select the stake.
  4. Hit spin and hope that you’re in for a treat! 
  5. Autospin for up to 500 automatic spins is also available.

Bet Sizes & Paytable Wins 

The minimum bet is 0.50 coins, which may not be quite low enough for the particularly casual players. The maximum bet is a whopping 400 coins, which should more than satisfy the higher rollers.

On the minimum stake, the most valuable is the red jellybean at 0.10, and the lowest is the pink donut shape at 0.01. 

On the max stake, the jellybean is worth 80 and the pink donut is worth 8. 

The top multiplier is 7x in the free spins feature.

Sweet 666 Bonus Features

Free Games Feature

If 6 consecutive rounds are achieved during any bet, the Free Games Feature will be triggered. The win multiplier starts at 3x and increases by x1 for each round up to a max 7x. It’ll be reset when there are no further winning outcomes during any given round. Free games can’t be retriggered.

Sweet 666 Review: Overall

There’s no denying that this is a cheerful, colourful slot. We like the contemporary aesthetics and glossy symbols, and it’s a simple enough slot to play while still being a little different to the norm with the 6x6 format. 

The cascading wins and multipliers keep each spin full of anticipation, though trying to get 6 consecutive wins to trigger free spins seems at first blush more challenging than some slots that require 3-of-a-kind symbols.

If you can scoop 6 consecutive wins then you’ll be better placed for bigger wins with the free spins feature and a top 7x win multiplier. However, this singular feature may not be enough for those who like more diversity and intrigue. The RTP at 94.35% is a bit disappointing and the minimum stake may still be rather high for the budget players, but the max stake could definitely tempt the higher rollers. It’s a sweet slot, but it may not have as much longevity of gameplay as some.

For some bigger wins, check out the Sweet Bonanza online slot from Pragmatic Play with similarly colourful graphics. There are free spins with dropping multipliers, a decent 96.51% RTP and a top 5000x prize.

Disclaimer: Sweet 666 trademark / license is owned by Aspect Gaming. This site is not endorsed by Aspect Gaming.

* This button takes you to an external third-party partner real money casino website. Although we try and match games with Casinos that have them, we advise that you double-check the slot content on the casino website before making a deposit or signing up.

Slot Data
Slot Name: Sweet 666
Software: Aspect Gaming
RTP: 94.35%
Paylines: 6
Reels: 6
Min Bet (all lines covered): £0.50 (GBP)
Max Bet: £400 (GBP)
Top Win: 50
Features: Multiplier, Free Spins, 6 Reels, Cascading
UK Available in GB? Game is not available in GB.


What is the RTP of Sweet 666?

This has a long-term average anticipated payout of 94.35%.

Can I play on mobile?

All of our HTML5 Aspect Gaming slots can be played anywhere, any time, on your laptop, desktop, mobile or tablet.

Can I play for free?

At Slots Temple all of our demos are 100% free to enjoy, giving you the chance to get a feel for the game before deciding whether you want to pay to play with an online casino.

Does Sweet 666 have a free spins bonus round?

Six consecutive wins will see you on your way to the free spins feature, starting at a 3x multiplier that has the potential to go to 7x to boost your payouts.

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