Ice Master

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™'.

Stackways Engine is a unique reel mechanic that dynamically varies the number of symbols displayed on each reel per spin. This system significantly alters the traditional fixed reel height, allowing each vertical reel to present a distinct number of symbols, typically ranging from 2 to 10 in the base game. The core of this feature is to provide a constantly evolving game grid, where the number of possible ways to win changes with every spin based on the dynamic symbol stack height across all reels. In bonus rounds, the potential for expansion is often greater, allowing for even more symbols per reel and exponentially increasing the ways to win.