Monsterinos – meet unusual creatures!

Head to the mad scientist’s laboratory with the Monsterinos slot where unusual creatures await. The slot comes from the provider Mr Slotty with bonus gambling game and free spins. Gather your courage and face these unusual characters because they can reward you selflessly.

In the following text, read all about:

  • Game themes and features
  • Symbols and their values
  • How to play and win
  • Bonus games

The setting of this online casino game is five columns in three rows of symbols and 25 paylines with columns filled with unusual creatures.

In the mad scientist’s laboratory, the world had no idea what he was doing until he produced a series of crazy creatures on columns. Your task is to accept them and see the great bonuses they offer you.


When you load the game you will see unusual elements of the laobratory with green tiles, ghostly eyes peeking out from the top of the columns and strange creatures in the form of symbols. The symbols in the game are monsters in different shapes and colors.

To make any winnings you need to match three or more matching symbols on a payline. All winning combinations are calculated exclusively from left to right starting from the first column on the left.

You can make one win on one payline. If you have multiple winning combinations on one payline, you will be paid the highest value combination.

Slot Monsterinos takes you to the laboratory of a mad scientist!

Total winnings are of course possible when you connect them on multiple paylines during a single spin.

As with most slots, the control panel is located at the bottom, but also on the right side of the slot. Just below the columns you will see two menus. In one, the amounts are presented in coins, while in the other you will see monetary amounts.

In the settings, a menu opens where you can set the stake value per spin. An Autoplay function is also available, which you can activate at any time. You can place up to 30 spins through this feature.


The Monsterinos game has two speed levels, and the fast spins are represented by a formula. You can adjust the sound effects in the upper left corner by clicking on the box with the speaker image.

Win Bonus Free Spins!

What will make all Monsterinos slot players happy is the news that the game has a bonus round of free spins. Bonus free spins are triggered by scatter symbols.

Scatter is represented by a monster symbol and appears on all columns. Three or more of these symbols on the columns will give you free spins according to the following rules:

  • 3 scatter symbols bring 1 free spin
  • 4 scatter symbols bring 3 free spins
  • 5 scatter symbols bring 10 free spins

In the Monsterinos slot, you have the chance to double your winnings with the help of a mini gambling bonus game. You can enter the gambling bonus game after any winning combination and gamble your current winnings.

You enter the gambling mini bonus game by pressing the Gamble button which will appear on the control panel on the right in the form of playing cards.

You press the button and you go to a new game screen. Then the cards will appear on the screen face down, and your task is to guess which color the card is, red or black. You can also guess which character will be on the card.

If you correctly guess the color of the next randomly selected card your winnings will be doubled. The colors available for guessing are red and black. If you guess the sign correctly, your winnings will be multiplied by four times.


It’s good to know that the Monsterinos game has a demo version that allows you to try it out before investing real money and familiarize yourself with the gameplay, rules and symbol values.

Also, you can play this fun slot game on all devices, both desktop, tablet and mobile.

Slot Monsterions has the same interface and most features as other slots from this provider, but the unusual theme makes it stand out in a special way.

Play Monsterinos slot at your chosen online casino and make a profit.


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