After Cascades have stopped in the Base Game, 3 or more scattered Bonusball symbols trigger Free Games. Free Games start on a 5x5 grid and continue on this grid until the Powergrid Feature is triggered by landing the Powerup Ball anywhere in the grid. The next free game will be on a 6x6 grid which continues until the Powergrid Feature is triggered again, making the grid expand to a 7x7. The game will continue in this size until the final Powergrid Feature is triggered and the grid expands to an 8x8 grid. The Player will get one spin at this size grid and once all cascades have finished for that spin, the player will be returned to the main game in a 5x5 grid.
Free games are played on the same wager as the triggering game.