Build the Bank Slot by Crazy Tooth Studio

There are no wilds here and no free spins. The entire bonus structure runs through a single mechanic: MEGA PILE, triggered by landing 3 or more scatters on the base 5x5 grid. Once triggered, the game switches to a taller 5x7 board where symbols drop and stack from the top, settling into the lowest available position in each column.

The standard MEGA PILE runs for exactly 3 rounds. Each round populates the 5x7 grid with Credit Awards (values from 0.04x to 20x bet), Multiplier Symbols (2x through 10x), Special Awards, or Passive Symbols that pay nothing. If one of the triggering scatters contained a Respin Upgrade, the round limit disappears and the feature keeps going until 3 consecutive rounds produce nothing but Passive Symbols.

Multipliers work directionally: each one applies to all Credit Awards in its row, its column, or all adjacent positions. Special Awards create new Credit Awards across an entire row, column, or adjacent cells. The interaction between these two symbol types is where bigger payouts come from - a well-placed 10x multiplier next to a cluster of Special Award-generated credits compounds fast.

Three Bank Prizes sit to the left of the grid: Mini, Midi, and Max. Filling the bottom 3 rows with Credit Awards or Multiplier Symbols awards Mini, filling 4 rows awards Midi, and filling all 5 bottom rows triggers Max. These prizes grow gradually during play and reset to their base value once collected. Only one of each pays out per feature activation, so landing Max on the same round you already claimed Mini means Mini won't fire again.