Enter the lair of a mad scientist as Atomic Slot Lab showcases replicated reels in its latest experimenting slot release, Professor Big Win


Out now




Professor Big Win is a 5×4 reel slot with 40-paylines and bonus features including replicating reels and free spins.




95.52 per cent


Low value symbols come in the form of the high end of a deck of cards, from nine through to King. If the right number of winning combinations land on a single spin, these symbols can offer between x0.12 and x0.62 the player’s bet. 

Meanwhile, test tubes, notepads, microscopes and conical flasks represent the medium value symbols, offering between x0.25 and x2.5 the player’s preferred wager. 

Money jars and Professor Big Win himself depict the high value symbols for this title. These symbols can offer between x0.25 and x12.5 the player’s bet, depending on the number of paying combinations that fall on a single spin. 

Voltage bonus symbols can appear on both the first and fifth reels, triggering the replicating reels feature when two land at the same time. However, this feature can also be randomly triggered on any spin where this does not occur.

Free spins text scatters are also available, activating the free spins game mode if at least two reels become fully stacked with free spins symbols. 

Finally, wild orb symbols are included, substituting for all symbols other than the voltage bonuses and the free spins scatters. Additionally, landing three, four or five wilds in a winning combination will result in payouts of x1.25, x5 or x50 respectively. 


When the replicating reels feature is activated, between two and five reels will be chosen to be enhanced for one free respin. 

These selected reels will reveal identical symbols to increase the win potential of the respin, while also increasing the chances of activating the free spins game mode with at least two full reels of scatters. 

During the free spins game mode, the reels that activated the game mode will become replicating reels for the entirety of the feature, revealing identical symbols throughout. 

While players are given seven initial spins, any full reels of free spins scatters that appear during the feature will award an extra three spins and turn into another replicating reel. 

The free spins game mode can also randomly activate a high voltage feature, which increases the players chances of landing another full reel of scatters. 

Furthermore, players can buy access to the free spins game mode for the price of x100 their chosen bet.