Return to Player
96.6%
Minimum bet size
0.20
Game type
Video Slots
Volatility
High
Reels
1-7
Progressive jackpot
No
Popularity
Maximum bet size
10
Game Provider
Microgaming
Bonus features
No
Paylines
1
Theme
7s
Seven 7s online slot game
Released in February 2020, Seven 7s is a Crazy Tooth Studios title under Microgaming. This lively slot starts with 1 reel and 1 pay line, then expands to 7 reels. A 25,000x spin-bet multiplier is identified as the Super 7s slot game's fixed jackpot win.
Theme and Story
Seven 7’s celebrates the slot world's decades-old ‘7-symbol’. This online slot game pairs the ‘7-symbol’ with the ‘Bar-symbol’, the classic x2-multiplier wild and the familiar ‘fixed jackpot win’, calling to mind the casino 7-symbol that players have long admired.
Graphics, Sound, and Animation
Seven 7’s showcases vivid digital artwork and animated effects. The reels extend smoothly as the game progresses, with no reported lag or distortion while the layout expands on either a small mobile screen or a large desktop monitor.
The artwork surrounding the reels uses orange, green and reddish-brown tones reminiscent of the gaudy décor often associated with land-based casinos. Elegant piano, bass and tambourine make up a cheerful soundtrack, while lively electronic effects accompany gameplay.
Top Casinos to Play Seven 7s:
How the gameplay works
Play begins with 1 reel and 1 symbol position. When a 7-symbol lands, the layout can expand to 2, 3, 4, 5, 6 or 7 reels. The stages are 1x1, 2x1, 3x1, 4x1, 5x1, 6x1 and 7x1.
The game keeps a single pay line and 1 symbol position per reel, no matter how many reels are active. If a bar symbol lands or the reels stop between symbols, the expanding-reels feature does not trigger.
To expand from 2 to 3 reels, from 3 to 4, and so on, a 7-symbol or 2x-symbol must land on the newly added reel. Reels already in place remain locked rather than spinning again.
Reel 1 spins and lands a 7. Reel 1 then locks as reel 2 spins. If reel 2 lands a 2x- or 7-symbol, the game expands to 3 reels. Reels 1 and 2 remain locked while reel 3 spins for a 2x- or 7-symbol. The sequence can continue up to a maximum of 7 reels.
Whenever the x2 symbol lands, it acts as a wild for the 7-symbol and doubles the potential win displayed on the paytable above the reels by x2.
Listed payouts:
- 7-7 = x2 spin bet multiplier
- 7-7-7 = x10 spin bet multiplier
- 7-7-7-7 = x25 spin bet multiplier
- 7-7-7-7-7 = x75 spin bet multiplier
- 7-7-7-7-7-7 = x250 spin bet multiplier
- 7-7-7-7-7-7-7 = x25,000 spin bet multiplier
Spin-bet multipliers do not add together: the payout is determined by the highest level reached, and the x2-multiplier wild can multiply that level if it is part of the combination. Changing your wager also updates the paytable automatically, displaying the cash win instead of the multiplier.
A range of controls lets you customize play: choose quick spins, set auto spins with win or loss limits, and turn the slot's sound on or off.
Bonuses and free spins
Seven 7s has no free spins or special features to trigger during play.
Bet sizes, RTP and volatility
Select your stake using the casino chips icon. The minimum and maximum wager is 0.20–10.00 per spin. The review lists a long-term expected RTP of 96.6% and classifies the slot as high variance. It says the 7-symbol lands with some regularity, but larger wins may require waiting for the game to reach 4 or 5 reels. This is no guarantee of bankroll performance or returns.
Conclusion
Crazy Tooth Studios and Microgaming teamed up to create The Seven 7’s. Its initially simple single-reel setup may seem unappealing, but a few spins could keep you playing longer than expected. The 7 symbol, multipliers and expanding reels are central to the game’s appeal, especially the challenge of revealing all 7 reels and reaching the full 7-reel layout.
Evan Carrington brings more than 12 years of experience in the iGaming industry, specializing in online casino reviews, slot game analysis, and player safety assessments. Their expertise includes casino licensing, RTP, volatility, bonus terms, and withdrawal policies. Combining hands-on reviews with independent research, Evan provides clear, evidence-based coverage to help players understand gambling platforms, their features, and possible risks.
