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Professor Bubbles


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Professor Bubbles Slot

According to our Editorial Guide
This page is written by
Rudie Venter
Rudie VenterOnline Slots and Casino Games Expert
Fact checked by
Ilse Lotz
Ilse LotzHead of Editorial
clockReading time 2 min

Professor Bubbles is one of the most popular SkillOnNet’s 3D online slots. It takes us into the world of scientific experiments, conducted in an out-of-date laboratory and under the watching eye of a nutty professor. This cartoon-like slot features impeccable graphics; every tiny detail is carefully created and fit in the screen. 

Five reels are populated with alluring icons and all 20 paylines are active. When it comes to the gameplay, players can expect many lower wins and have to rely on Experiment Mode in order to achieve higher scores. When played in this mode, Professor Bubbles slot brings multiplied wins, up to 50 times. Free spins can be achieved, but not more than 5 free spins in a round.


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Once you enter the laboratory, you will be faced with beautiful icons, representing science instruments, such as test tubes, microscope, atomic model, different kinds of beakers and even an hourglass. In an electrified atmosphere, you will have the opportunity to run your own experiment and create your own mix of ingredients. Those ingredients include coin denominations and number of coins per spin. Like in every experiment, some ingredients are already given, such as the number of paylines (fixed 20). Bet max tab simplifies the process, since it maximizes your bet, with the current coin denomination.

Professor Bubbles slot shows us a laboratory managed by an energetic, Einstein-like, professor. He jumps around, pulls the handles and celebrates wins. Every symbol and every button displayed on the screen is theme-related and carefully designed to please a player’s eye. The eccentric Professor plays as Wild symbol, substituting for all symbols, except for the Scatter. Scatter symbol is presented by laboratory beakers. A nice animation follows every win – a green lightning will underline your winning combination.

All wins pay left to right on adjacent reels. The highest paying symbol is Test Tubes, awarding up to 600 coins, followed by Microscope with 500 coins win, if 5 of them appear on adjacent reels. Other symbols, aligned according to payouts, are: Atomic Model, Hourglass (so much for a modern technology), Diploma, Book and a couple of glass beakers. Keep in mind that all prizes are multiplied during the Experiment Mode.

The big experiment starts when you get three or more scattered Beakers on the reels. You will receive 5 free spins and enter the Experiment Mode at the same time. The Experiment Mode features multipliers, starting with x5 in the first level. To reach the next level you will need Frog symbol on the reels. (Funny, but this frog looks like the professor – even wears glasses. Did the experiment go wrong, or what?). You will, however, have to play for quite some time before you come to the next level. This can be annoying, but it may pay off eventually, since the final level of the Experiment Mode awards you generously with x50 multiplier.

The main attraction of Professor Bubbles slot is delightful graphics and animation and it can be played simply for visual pleasure. On the other hand, when it comes to game features, Professor Bubbles promises much but delivers less than expected. It takes hours to reach the upper levels of Experiment Mode and bigger multipliers. Yet, those ready to wait may profit from their patience eventually.

Our rating: 76/100

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Rudie Venter
Rudie Venter

Online Slots and Casino Games Expert

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Rudie Venter is a seasoned online casino games expert with 13 years of industry experience. Holding a ...continue reading

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Fact-checked by: Ilse Lotz

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