Bonanza Megaways

Bonanza Megaways needs little introduction to anyone who's spent time around online slot streams — this Big Time Gaming release is widely credited with turning the Megaways mechanic from a novelty into the industry standard it is today.

The slot that started a movement

Set in a bustling gold mine, Bonanza Megaways pairs hills, waterfalls, and a modest little mining hut with quirky music and an instantly recognisable reel layout. It arrived quietly at first, gradually building a following through the casino streaming community until it became one of the most widely played slots of its era — a reputation it has more than earned given how many mechanics from this release have since become genre standards.

The Megaways engine explained

Bonanza Megaways is a 6-reel slot offering up to 117,649 ways to win, generated dynamically as the number of symbols on each reel changes from spin to spin. Cascading reels clear winning symbols and drop new ones into place, an extra horizontal reel helps form additional combinations, and an escalating win multiplier builds across consecutive cascades within the same spin sequence. This combination of systems — largely pioneered together here — is precisely what later Megaways titles across the industry would go on to imitate.

RTP, volatility and stakes

The RTP sits at a standard 96%, in line with the wider market average, while volatility is rated high, delivering the swingy, cascade-fuelled rhythm this style of slot is known for. Betting runs from 20p/c up to $/€20 per spin, accessible across mobile, tablet, and desktop alike.

Max win

Bonanza Megaways caps out at 12,000x the stake — a solid but not extreme ceiling compared with some of the newer Megaways releases it inspired, reflecting its status as an earlier, foundational entry in the genre rather than a modern high-volatility outlier.

Verdict

Bonanza Megaways earns its place in slot history, and it still plays well today even next to flashier modern releases built on the mechanics it popularised. Anyone curious about where the Megaways craze actually began owes it to themselves to give this one a proper session. Fire up the free demo at johnessyslots to see the original gold rush for yourself before deciding whether to stake real money on it.