Return to Player
96.6%
Minimum bet
0.20
Game type
Video Slots
Volatility
High
Reels
1-7
Progressive jackpot
No
Popularity
Maximum bet
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 slot starts with 1 reel and 1 pay line, then expands to 7 reels. The described fixed jackpot win for the Super 7s slot game is a 25,000x spin-bet multiplier.
Theme and story line
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 long-admired casino 7-symbol.
Graphics, sounds, and animations
Seven 7’s showcases vivid digital artwork and animated effects. New reels join smoothly as the game progresses, with no reported lag or distortion as the reel set expands on either a small mobile screen or a large desktop monitor.
The artwork around the reel(s) uses orange, green and reddish-brown tones reminiscent of the kitschy décor often associated with land-based casinos. Elegant piano, bass and tambourine create a cheerful soundtrack, while gameplay features lively electronic and digital effects.
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 reel set extends smoothly to 2, 3, 4, 5, 6 or 7 reels. In other words, the slot moves through 1x1, 2x1, 3x1, 4x1, 5x1, 6x1 and 7x1 layouts.
The game keeps a single pay line and 1 symbol position on each reel, no matter how many reels are active. If a bar symbol lands or the reels stop between symbols, the extended-reels feature does not activate.
To expand from 2 to 3 reels, 3 to 4 reels and so on, a 7-symbol or 2x-symbol must land on the newly added reel. Reels already in place stay still rather than spinning again.
For example, reel 1 spins and lands a 7. Reel 1 locks while reel 2 spins. If a 2x-symbol or 7-symbol lands on reel 2, the game expands to 3 reels. Reels 1 and 2 then remain fixed while reel 3 spins for a 2x-symbol or 7-symbol. The sequence continues, up to a possible maximum of 7 reels.
Each x2 symbol acts as a wild for the 7-symbol and doubles the potential win shown 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 accumulate: payment depends on the level reached, and the x2-multiplier wild can multiply that level when it is part of the combination. Changing your bet also updates the paytable automatically, showing the cash win instead of the multiplier.
A few controls let you customise 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
The Seven’s 7 online slot has no free spins or special features to trigger during play.
Bet sizes, RTP and variance
Select your stake using the casino chips symbol. Bets range from 0.20 to 10.00 per spin. The listed expected long-run RTP is 96.6%, and the slot is classified as high variance. Although the 7-symbol is said to land with some regularity, this review suggests players may need to reach 4 or 5 reels for larger wins. This is not a guarantee of bankroll performance or returns.
Conclusion
The online slot Seven 7’s is a creative joint project by Crazy Tooth Studios and Microgaming. Its initially unassuming single-reel setup may not appeal at first, but the review notes that a few spins can keep players engaged longer than expected. The 7 symbol, multipliers, and expanding reels underpin its appeal, especially the goal of extending play until all 7 reels are shown and the full 7-reel layout is revealed.
Evan Carrington brings more than 12 years of experience in the iGaming industry, with a focus on reviewing online casinos, assessing slot games and examining player safety. Their work covers casino licensing, RTP, volatility, bonus terms and withdrawal policies. Drawing on practical testing and independent research, Evan provides clear, evidence-based reviews to help players understand gambling platforms, their features and possible risks.
