Based on the famous story of the folk hero Ali Baba, 40 Thieves is a 5 reel, 40 payline slot powered by Bally Wulff. The chief attraction in this Arabian-themed adventure is the bonus feature that offers between 10 and 50 free spins with added wilds. Available only on desktop devices, hop on your magic carpet from between 10p and £50 per spin.

The imagery on show in 40 Thieves gives a strong flavour of classical Arabia – joining the lower value playing card suit symbols are shisha pipes, scimitars, white horses and a masked robber. The latter is the top paying symbol, offering awards of 20 times your stake if you land 5 in a payline. There is also a wild that substitutes for everything apart from the scatter. Symbols, including the wild, can appear as stacked on multiple reels to deliver extra winning opportunities.

The golden jewel is the scatter – it can land on any reel and is the key to unlocking the Free Games feature. Land 3 scatters and you can look forward to 10 free spins. Make it 4 and the free spins rises to 15. Get a full complement of 5 scatters and a massive haul of 50 free spins will be yours.

And that’s not all. In addition to the standard wild, the masked robber will also be wild for the duration of the feature round – this really helps boost your winnings.

40 Thieves also comes with 2 gamble features – there’s a standard guess the colour of the card option which doubles a payout if you choose correctly. You can also opt for Risiko Classic – stop on the flashing lights to reveal whether you’ve won or lost. Work your way up the pyramid for even bigger prizes. You can also take a half gamble if you wish.

This is a fairly basic take on a classic old story – the sound and visuals have the feel of a brick and mortar casino slot. The gameplay isn’t the smoothest either. That said, you won’t be complaining if you manage to trigger the maximum 50 free spins – the extra wilds can certainly help. Decent wins are possible in the base game too courtesy of the stacked symbols.

We found the variance to be in the medium range. 40 Thieves isn’t the flashiest slot you’ll come across, either in terms of the way it looks or the features it offers. If you want something solid and steady or just like the classical theme, then 40 Thieves is worth a look though. If you like the theme, there’s NetEnt’s Arabian Nights which offers a progressive jackpot and Leander Games’ Ali Baba and the 40 Thieves which is very good.