Build the Bank's base game is played on a 5-reel, 5-row grid with 3,125 active ways. It uses an Any Adjacent Pays system to award wins, where three or more matching symbols on adjacent reels trigger a payout – wins do not have to start from the left side of the grid, in other words. It's medium volatile and comes with a trio of RTP settings of 96.09%, 94.18%, and 92.16, while stakes of 0.25 to 50.00 per spin may be selected.
The lower-paying symbols in Build the Bank are J, Q, K, and A. They all pay the same, giving the player 0.08X the bet for a winning combination, no matter if it contains 3, 4, or 5 symbols. The higher-paying symbols are shovel, bricks, hammer, and construction helmet. These four symbols are also worth the same, paying 0.12X the bet for a winning combination. Filling all 25 positions with one of the higher-paying symbols pays 375X the bet. There’s no Wild Symbol, but the base game has Scatter Symbols and a Respin Upgrade Symbol. You will also find Credit Award Symbols, Multiplier Symbols, Special Awards Symbols, and Passive Symbols in the Mega Pile bonus feature.
Each time the Mega Pile is triggered, the game board will expand by two additional rows to create a 5x7 layout. All symbols will now drop from the top of the screen in what looks a little like a game of Tetris. Not all positions are filled with each row, allowing gaps to form and distinct piles to develop at the bottom of the screen.