Mad Labs is a mad scientist laboratory-themed slot by Popiplay.
The slot is built on a 5x6 reel grid with 50 paylines and offers a theoretical maximum win of x30,000.
It also comes with special features such as Hold and Respin and Feature Symbol Transformation, adding locked-symbol bonus tension and extra gameplay variety from the feature mix.
Reel Config
5x6
Paylines
50 Lines
RTP
97.12%
Volatility
-
Max Win
30,000x
Bonus Buy
100x
The profile puts particular emphasis on bonus play and the different rules of those stages. The free-spin family represents a part of the game’s bonus mechanics.
With numerous special features in its structure, this game has a broad mechanical repertoire spanning more individual systems.
Select a role to explore its contributing features.
Number of features contributing to each role. One feature can contribute to several roles.
Each bar counts the features that contribute to a functional role. One feature can contribute to more than one role. Bar lengths are scaled to the largest count within this game; compare the numbers when looking across games.
These counts describe feature composition. They are not win probabilities, payout contributions, or quality ratings.
Hold and Respin, or 'Hold & Win', is one of the most popular core bonus game mechanics in modern slots. The essence of this feature, unlike traditional free spins, is to 'Hold' bonus symbols on the reels and 'Respin' the remaining empty spaces to fill up the screen. This system was popularized worldwide through 'Money Train 2's' 'Money Cart Bonus' and is the foundation for numerous developer-specific brand features like Wazdan's 'Hold the Jackpot™' and Playtech's 'Fire Blaze™'.
Feature Symbol Transformation is a unique symbol mechanic where a special symbol appearing on the game grid does not remain static. Instead, it dynamically transforms itself into one of a select few predefined special feature symbols. These can include an Instant Prize, a Multiplier, or a Collector symbol, each immediately activating its respective bonus effect. This mechanism provides dynamic gameplay where a single symbol acts as a gateway to varied bonus opportunities.
Average Bonus Buy Price
This slot's bonus buy price sits within the usual range for comparable slots. Buying the feature can be a reasonable option if your goal is to reach the free-spin round without waiting for a natural trigger. The trade-off is that you skip the base-game spins that would normally happen before the feature, including any wins or volatility from that part of play.
Each SlotWise Preview examines a game’s rules, specifications, and special features. We identify individual mechanics and map them to standardized feature categories, then use FeatureMatch™ to describe the game’s mechanical character. Alongside free demo access, this gives you a consistent starting point for understanding and comparing games. Where a 300SPINS™ review is available, it adds observations and results from a recorded play session.
