Go mining for treasure in Bonanza, a 6 reel slot from Big Time Gaming that’s played using the developer’s Megaways game engine that offers up to 117,649 winning combinations. It also comes with a free spins feature with expanding multipliers. Play from between 20p and £500 per spin.

Bonanza uses the Megaways game engine – each of the 6 reels can feature anything between 2 and 7 symbols so the number of ways to win changes on each spin. Winning combinations are formed when the same symbol lands on adjacent reels.

After each winning spin, the successful symbols are blasted away from the reels and replaced by the symbols above. A new payout is made with the new symbols in place. These blasts continue until there’s no new winning combination on show.

Visually, Bonanza is rather well done. The setting is a mine. Joining the lower value A to 9 playing cards values are a quartet of gemstones. They’re all set against granite and look rather good. Above the reels you’ll notice a cart that carries four symbols on each spin. Each cart adds another symbol to the reel directly below, providing another potential winning opportunity.

The sticks of dynamite are the game’s wild – they replace all other symbols bar the scatter. The letter G, O, L, D are the scatter. Land 4 of them and you’ll trigger the Free Spins feature and be awarded 12 free spins. Any further scatters on the trigger spin will add another 5 free spins to your total.

The exploding reels are in play during the feature. A multiplier is applied to any payout after every successive explosion. It starts at 1x and increases by 1 on each subsequent explosion win. Look out for the bars of gold which appear in the carts above the reels during the feature. 3 of them will add another 5 free spins to your tally. Four will give you another 10 free spins.

There’s plenty of action on offer in Bonanza – the Megaways game engine means there’s always something happening. The best winning opportunities will come via the Free Spins feature though where the multipliers can quickly have an impact. On the volatility scale, we’d put Bonanza on the high side with occasional bumper scores.

The design in Bonanza is terrific – visually, it’s all rather lovely with a fast-paced hillbilly style backing track an ideal match for the theme. The gameplay offers some great entertainment too. Get lucky with those free spin explosions and the could be a Bonanza of gold hiding inside Mount Cashmore. If you like the mining theme, Aristocrat’s Where’s The Gold is worth playing.