Players are taken to a bright, dazzling background with gemstone elements glimmering on both sides of the Diamond Cascade slot machine's grid. A large stone with golden accents is visible on the right side. It doubles as a metre and has the ability to gather winning symbols to increase the multiplier.
The game is rather simple and well-made, with an overall cartoon-like appearance in terms of graphics. The grid alternates between day and night when the free spins feature is activated.
In this slot machine, there are eleven distinct gemstone symbols. The reward for a five-of-a-kind win ranges from 0.6x to 20x the wager.
All clusters on the reels with at least five symbols with matching background colours that are adjacent to each other in any vertical or horizontal direction will erupt and vanish following every paying symbol win. After that, the remaining symbols will descend to the bottom of the reels, leaving empty spaces behind and new symbols dropping in from above.
In the screenshots above and below, you can see a metre to the right of the reels that collects all symbols that burst. A win multiplier gains an additional 1x multiplier for each 20 symbols gathered. After all colour tumbles have concluded, the win multiplier is applied to the total of all wins that arise from the same base game spin.
This bonus feature can be triggered by landing three or more Scatters in the Diamond Cascade slot game's base game. The round will begin with 15 bonus spins for you. All symbols gathered during the Colour Tumble feature contribute to the win multiplier's increase as a progressive feature; this multiplier does not reset in between free spins.
During the bonus round, if you get three or more scatters, you will be awarded an additional number of free spins. For example, if you land four or five scatters, you will receive ten, fifteen, or twenty free spins.