With an iconic design, up to 117,649 Ways to win plus an epic combination of reactions, free spins and multipliers, the legendary Bonanza slot has a deserved place in slots history.

Why play Bonanza?

Free spins with multipliers

Cascading symbols

26,000x max win

What we think about Bonanza slot

“Bonanza wasn’t the first Megaways slot, but it was easily the most successful of the early games and you can see why”

Is Bonanza the right slot for you?

With its slick graphics, fun little animations and an incredible package of features, the Bonanza slot is one of the jewels in Big Time Gaming’s crown. In this Bonanza slot review, I’ll leave no stone unturned in my quest to find the secret behind one of the best casino games.

Bonanza is a 6-reel video slot machine with between 2 and 7 rows on each reel, plus an extra row of symbols above the game just for good measure, helping to deliver up to 117,649 ways to win.

You can bet between 20p and £5 per spin when you play Bonanza at OJO’s place.

Although the highest paying symbol, the purple gem, is worth just 50 coins, the combination of wins from reactions and multipliers means the game’s max multiplier is a whopping 26,000x.

A screenshot of the Bonanza online slot machine by Big Time Gaming

The iconic Bonanza slot machine has a nice bright mining theme, and while the game isn’t the most advanced in terms of design or gameplay but small animations bring the game to life; Burning dynamite fuses, the wonderfully hypnotic water wheel, rolling carts, exploding symbol reactions, cascading blocks, the fiery arrival of scatters and even the gold coins that appear after a decent win.

One thing to bear in mind is that Bonanza is a high volatility slot with the potential for big wins, big bankroll swings and periods with minimal return. If you’re a player who prefers low volatility slots, a game like Holy Diver or Reel Spooky King Megaways gives you the same Megaways fun but with a less volatile payout model.



Megaways was invented by Big Time Gaming but is now used in a wide range of slots from other developers thanks to partnerships and licencing agreements. Instead of reels containing a fixed number of positions, say 3 or 4 rows, Megaways reels have a random number of rows between 2 and 7, which changes every spin. The more rows per reel, the more combinations of paylines are possible.

Wins are awarded by landing matching symbols on adjacent reels. This means they can appear anywhere on the reel, rather than having to be connected to each other as you’ll find in most standard 20-payline slots.


Every winning combination when you play Bonanza results in a reaction where the symbols explode, allowing those above them to drop down and create more possible wins. This can often lead to a chain of consecutive wins on the same spin. If any symbols on the cart row are involved in reactions, more carts are wheeled round to replace them.

A stick of dynamite acting as a wild symbol in the Bonanza slot game


As usual, Wilds replace all symbols except the Scatter, although Wilds will only ever appear in the carts in the top row.

Free spins

Despite having a gazillion win lines in the base game, the Bonanza Free Spins game is the real key to big wins. Land 4 Scatter symbols during a regular base game spin and you'll trigger 12 Free Spins. You might well hit a 5th Scatter too, which will award an extra 5 Free Spins, taking your total to 17.

During free spins, every winning combination increases the multiplier by 1. As each win also creates a reaction that can result in another win, your multiplier counter can actually rise several notches on the same Free Spins.

There’s no limit to the Multiplier in this Bonanza game either and on one of the games we played when prepping for this piece, we reached 16x within 10 spins. And that ain’t all. The carts can also ferry in some special free spins scatters. Hit 4 of them and you’ll earn 5 more free spins, while 5 scatters will award 10 more free spins.

Other games like this

Holy Diver

Experience the early days of Megaways with a few spins on another Big Time Gaming classic, the Holy Diver slot. Their Reel Adventure™ mechanic never quite caught on, but I love the quest that progresses below the reels while you play.

Dynamite Riches Megaways

For a more modern take on mining themed Megaways action, try Red Tiger’s Dynamite Riches Megaways. Blast away low value symbols and collect dynamites to unlock special features. It’s connected to their Must Drop Jackpots too, which is handy. The original Dynamite Riches slot is pretty good too.

My verdict

Danger down below! With Bonanza’s unique theme, a worthy free spins feature and the odd payline or 2, our favourite Aussie game studio has smacked this one right out of the park.

If you'd like to play Bonanza or any of PlayOJO’s 5,000 online slots, sign up now and you’ll also get free spins on a popular slot when you make your 1st deposit (terms apply) with no wagering requirements at all. Plus, you’ll also get you money back on every spin of Bonanza with OJOplus.


How do you play Bonanza?

Unlike our other Megaways slots like Raging Rhino, White Rabbit and Extra Chilli, this Bonanza game goes big on win lines by using an extra row of symbols, brought round by mining carts on a track above the reels.

Unlike other slots with a fixed or variable number of paylines, to play Bonanza you simply choose the total bet per spin and the game does the rest. The number of winlines varies with every spin from the high 100s to over 100,000, and any winning combinations are then multiplied by your total stake.

For example, the nice wooden paytable tells us 6 Aces will net you 1.75 coins. If your total stake per spin is set to £0.20, those Aces will be worth 35p. Might not sound much for 6 Aces, but with thousands of ways to win, spins can contain multiple winning combos. The base game isn't where you unearth the richest prizes however, and you should be looking to the Free Spins feature to strike gold.

Once you’ve played the Bonanza online slot for a few minutes, you’ll quickly pick up the various mechanics and features. But if you still need a few spins to get comfortable, choose OJO's Bonanza demo version to play it for free.

What is the Bonanza RTP at PlayOJO?

The Bonanza UK slot RTP is 96%, more than fair, but we can do even better. That’s why OJO gives you money back on every spin through OJOplus. That real-time cash boost, which can be spent immediately – no strings! – is how we ensure the Bonanza RTP is effectively higher here than anywhere else.

How do I know that Bonanza online slot is fair?

When you play our Bonanza slot, you’re not just getting good value, it’s safe, secure and fair too. Big Time Gaming are licenced by a number of top regulators including the UK Gambling Commission, which means this Bonanza slot game and their other games are all independently certified to ensure the highest standards of fairness and integrity.