Play for money

Game option

Overall Rating

Min. bet (Max. bet) $, €

0,10 (10,00)





Game release




Multiplier, Reelset Changing

Classic style, Retro

Slot option





Play Seven 7's slot machine

Seven 7's (Seven 7) is a simple but at the same time interesting slot machine developed by Crazy Tooth Studio for Microgaming casinos.

Microgaming company gladdens its fans less and less with slots of its own design. But due to the fact that independent studios cooperate with them, this does not affect the number of games in their portfolio. One of those studios that has partnered with Microgaming is Crazy Tooth Studio, and it continually surprises with unique and innovative slots. Suffice it to recall the latest slot machine, The Incredible Balloon Machine, where balls had to be inflated instead of the usual reels. This time they presented to our attention a slot called Seven 7's (Seven 7), which still has reels, but it is also unique and very unusual.

Play Seven 7 slot machine for free

The design of the Seven 7's slot machine looks very unusual and is made in the Art Deco style. You will see a lot of gold-green iron parts that slowly sway, giving the impression that the action is taking place on the waves of the sea. It is also unusual that as soon as you open the slot, only one reel with one symbol appears in front of you. The thing is that in the Seven 7's slot machine, the Crazy Tooth Studio developers decided to use a mechanic called Continuwin, thanks to which you will have the opportunity to increase the number of reels from 1 to 7, while there are always 1 lines (more on this below ). It won't take long to talk about the symbols provided in the game, since there are only three of them - the Bar inscription was added so that not every spin is profitable. Seven - will help increase the number of reels and the 2x symbol replaces 7, and also doubles the amount of the prize.

Bonus features of Seven 7's slot

There are no free spins or any other bonus features in Seven 7's slot machine. Because of this, the gameplay is quite simple and straightforward. The main key to winning is getting sevens, which can increase the number of reels to 7. This game mechanic is called Continuwin and works like this: when the 7 symbol appears on the reel, another reel is added and a re-spin is triggered. If another 7 lands, another reel is added. This process is repeated until the Bar symbol appears instead of the seven, or all seven reels are unlocked and filled with sevens. Winnings will be awarded as follows:

  • two sevens will win 2x your stake.
  • three sevens will win 10x your stake.
  • four sevens will win 25x your stake.
  • five sevens will win 75 times your stake.
  • six sevens will win 250 times your stake.
  • if you hit 7 sevens you get a jackpot that's 25,000 times your stake.

Once the win is paid out, the game reverts to the original one reel.

The only additional symbol is 2x, which is a wild multiplier. When it lands, it replaces the sevens and doubles the prizes and also helps open another reel. This symbol can only appear on reels 2, 3, 5 and 6 and does not increase the jackpot size.

In conclusion, I would like to say that Seven 7's is another very unusual game from Crazy Tooth Studio, which is very different from other slots, so it’s impossible to say whether every player will be able to like it. The only way to find out is to launch Seven 7's on our website and test it for free.


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