Overview of The Professor Big Win slot
Title
Developer
Rating
RTP
95.52%
Daily
-
Weekly
-
Cold
Professor Bigwin is a medium-volatility video slot that blends mad-scientist flair with a highly structured Replicating Reelsâ„¢ system. Set inside an electrified laboratory, the game focuses on predictable yet powerful reel transformations, combining consistent base-game enhancement with a feature-rich Free Games mode driven by stacked symbols and expanding replication.
Professor Bigwin is played on a 5x4 reel layout with 40 fixed paylines. Wins are formed by matching symbols from left to right across active paylines. The core gameplay revolves around triggering the Replicating Reels Feature, where multiple reels transform entirely into a single symbol, creating strong win potential without altering bet size or paylines.
The game is set in a chaotic laboratory powered by electricity and scientific experimentation. Professor Bigwin serves as the eccentric host, with visual effects centered on electrical surges, shocked reels, and symbol transformations. The presentation is energetic but clean, ensuring the focus remains on reel behavior rather than excessive animation.
Professor Bigwin includes two main features: the Replicating Reels Feature and the Free Games Feature. Both rely heavily on full-reel symbol transformations, reinforcing the game’s identity as a replication-driven slot with repeatable outcomes and controlled volatility.
[WW] symbols act as Wilds and substitute for other symbols to form winning combinations
[SC] symbols act as Scatter symbols and are used to trigger Free Games when fully stacked
TR symbols are used to trigger the Replicating Reels Feature but do not replicate themselves
All other standard symbols can appear as replicated outcomes during features
Before each spin, the triggering reels transform into Replicating Reels
Each Replicating Reel transforms entirely into a single symbol chosen at the start of the spin
If a fully stacked [SC] lands on a non-replicating reel, that reel becomes a Replicating Reel for the remainder of the Free Games and 3 additional Free Games are awarded
Players may also enter High Voltage Mode before any Free Games spin:
This increases the chance to retrigger Free Games and convert more reels into Replicating Reels
High Voltage Mode ends once additional Free Games are triggered or the feature concludes
When the Free Games meter reaches zero, there is a random chance to be awarded 5 additional Free Games. This can only occur once per feature and uses the same Replicating Reels configuration active when the meter reached zero.
The Replicating Reels Feature can be triggered in two ways:
When two TR symbols appear on the reels
Randomly after any Base Game spin where two TR symbols do not appear
Once triggered, the player receives one Replicating Reels Feature spin. During this spin:
2, 3, 4, or 5 reels become Replicating Reels
Every position on each Replicating Reel transforms into the same symbol, selected at the start of the spin
Eligible symbols include: WW, M1–M6, K, Q, J, TE, and SC
Non-replicating reels spin normally and wins are paid according to the paytable
The credits bet and paylines remain unchanged during the feature.
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