Bonanza

Bonanza was one of the first slots to run on Big Time Gaming's Megaways engine, where the number of symbol rows changes on every spin and the ways to win shift along with it, reaching as many as 117,649 at full height. Wins tumble off the grid and new symbols cascade down to refill the space.

Each tumble builds a multiplier that carries through the cascade sequence, so one lucky drop can chain into several more before it ends. The free spins round keeps that multiplier climbing across the whole bonus instead of resetting it each spin, which is where the largest results tend to come from.

Big Time Gaming pitched this one at a punchier medium-to-high volatility than the average cluster slot, and the payout return checks in at 96.0%.

Good pick for anyone curious about Megaways mechanics before trying newer titles built on the same engine, like Extra Chilli or White Rabbit further down this list.

Because the grid height changes every spin, the visible paytable adjusts along with it, so it's worth checking symbol values again after a taller drop. This was also one of the first Megaways titles other studios later licensed for their own games.

Because ways to win scale with grid height rather than a fixed count, the number displayed before a spin is really just a minimum, not a promise. Watching that number change is part of what makes the Megaways format feel different from a standard slot.