Dr. Rock & The Riff Reactor 2 is a rock music themed slot by TrueLab.
It features a 5x3 reel configuration with 243 ways to win, incorporating cascading reels and a Multimeter feature.
Players can aim for a maximum win of x20,000, with various special features including Killer Riff Free Spins and Reactor Charge Bonus Game.
Reel Config
5x3
Paylines
243 Ways
RTP
97%
Volatility
-
Max Win
20,000x
Bonus Buy
150x
Some roles are more represented than others, but the feature mix extends beyond a clear one- or two-role focus. The payout-related family includes values or progress that can carry forward or develop. Special-purpose symbols contribute to the reward-enhancing side of the profile.
A large feature set adds multiple mechanical layers to the game, with a wider range of special systems represented in its design.
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™'.
An Accumulating Multiplier is a powerful system, primarily used in bonus rounds like free spins. The core of this feature is that the multiplier applied to winnings does not reset with each spin; instead, it is maintained or continuously increases until the bonus round ends. Its goal is to create anticipation for exponentially larger payouts as the round progresses, providing players with maximum tension and thrill.
High Bonus Buy Price
This slot's bonus buy price is above the usual range for comparable slots, so buying the feature is not the default recommendation. It may still be worth considering if the free-spin round offers unusually strong mechanics, higher volatility, or a payout profile that is meaningfully richer than standard features. Without that extra upside, the buy price may feel expensive relative to typical bonus buys.
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.
