Volcanizer, released by Formula Spin, is a 3×3 slot whose highlight is the BONUS GAME: a run of random digits sets a multiplier for the bet, from x1 up to x999. Outside that round, wins come from three identical symbols.
Three volcanoes cracked with lava stand over the reels, the VOLCANIZER logo between them and a glowing lava field behind. On the reels you will find cherries, lemons, oranges, plums, grapes, double BAR, two gold stars and a flaming triple 7.
Only three of a kind pays. Cherries are worth the least; grapes, plums, oranges and lemons share one level; double BAR, stars and triple 7 climb from there, with the sevens at the top. The Game info screen, opened with the "i" button, lists the exact amounts.


The BONUS symbol, a split sphere of lava stamped BONUS, can appear on all three reels. Collect three and the bonus round begins.
Inside the round, the game draws random digits and shows them one at a time. The resulting number becomes the final multiplier, between x1 and x999, and it is applied to the bet once the last digit is revealed. On the rules screen, three volcanoes, each crowned with a fiery digit, illustrate the process.
The BUY BG button purchases the BONUS GAME directly. The price is 80 times the bet.
Parameter | Value |
|---|---|
Studio | Formula Spin |
Layout | 3×3 |
Base game win | 3 identical symbols |
BONUS symbols needed | 3 |
Multiplier range | x1 to x999, applied to the bet |
Bonus purchase | 80 bets |
No RTP figure appears here because the studio publishes several RTP versions. To see what else the developer has released, open the Formula Spin page.
To compare with other developers, browse the list of game studios.
Volcanizer starts for free, without a stake, from the slots section of 1xBet.


Android devices install the app from an APK that the official site provides.
No. According to the game rules, three BONUS symbols in any position start the BONUS GAME.
The digits come out one by one, starting on the right and moving left, until the full multiplier is shown.