The slot game, Iron Bank, revolves around a thrilling bank heist storyline, set in a cartoonish Cuban environment somewhat reminiscent of Pink Panther. Designed in collaboration with casinos-streaming slot enthusiasts, this game brings you into an immersive world of high volatile and exhilarating actions. The game utilizes terms from the gambling community, calling larger wins ”printing”, adding to its engaging appeal.

Key game features and mechanics are as follows:

**Core Mechanics:**

- The game offers a decent return to player rate of 96.2% that goes as high as 97% during the free spins.

- A bonus round purchase feature is also available depending on the player's jurisdiction. This entails a cost of no more than 100x your stake, and you get to choose from 3 available options for the bonus round.

**Iron Bank features:**

- The base game essentially revolves around 3 key bonus features:

1. **Random Mystery Symbols**: These symbols may be added to the reels at random times and will transform to reveal the same matching symbols.

2. **Stacked Multiplier Wilds**: These Wilds can cover reels 2 to 5. The multiplier value of these Wilds ranges from 2x to 10x. If more than one multiplier wild is landed, the multipliers will multiply for exponentially larger wins.

3. **Scatter Symbols**: The base game can provide you with 1 to 3 scatter symbols which can help trigger the bonus round.

- A minimum of 3 bank vault scatter symbols anywhere on the reels triggers the free spins round. Secondary wins of 20x, 200x and 2,000x the stake can be achieved through landing 4, 5, or 6 scatters respectively.

**Bonus Round Options:**

- A choice of three different bonus round options is offered once you've triggered the free spins round:

1. **Mystery Symbols**: This high volatility option gives you 8 free spins. A randomly chosen symbol at the start of the feature serves as the sticky mystery symbol. These symbols, when landed on reels 2 to 6, transform into a randomly chosen symbol revealing matching symbols on each spin.

2. **Expanding Wilds**: Providing 10 free spins, this very high volatility option includes expanding wilds on the 2 middle reels. A respin is rewarded for every expanding wild. Progressively, if a win occurs on the respin, the wild multiplier increases by +1.

3. **Multiplier Collect**: This feature includes 12 free spins, requiring you to gather coconuts above reels 2 to 5 to increase the multiplier displayed about each reel. Further, for every 2 coconuts collected, the multiplier is increased by +1. Every time all three lights on a reel's meter are lit, you get 3 extra spins.