Shimmering jewels deliver plenty of action in Double Gem, an unusual 5 reel, 40 payline slot from Stake Logic. Standard symbols create winning lines as usual. Play with Superbet mode active and the background colours can deliver too. Successive wins deliver multipliers which can reach up to 10x. Play from between 40p and £40 per spin.

The set up in Double Gem is pretty simple. In standard mode, you’ll see plain white reels which are filled with 7 brightly coloured gemstone symbols. The best of these is the red stone which pays 500 coins if you land 5 on a payline. Appearing on reels 1, 2, 4 and 5 only, the rainbow diamond is the wild which replaces all other symbols.

A first win is paid out at the standard 1x. Each successive win increases a multiplier which can reach up to 5x if you really get on a roll. The multiplier reverts back to 1x following a winless spin. This is known as the Base Game Multiplier feature.

Double your stakes and use the Superbet Game to bring a second set of winning chances into play. The white reels are replaced by 7 different rectangle shapes. These appear behind the usual gemstone symbols and effectively form a second set of reels.

Land 3 or more of the same colour rectangle and you’ll create winner. Again, the red is the top payer, awarding 500 coins. The rainbow rectangle is the wild. It can hit anywhere apart from the middle reel.

The multipliers on offer for the colour wins are better than the gems. The multipliers start at 2x and increase with each consecutive win, up to a maximum of 10x. This is known as the Superbet Multiplier feature. If you’re playing the Super Bet Game, you’ll be able to hit multipliers for both gemstone and background colour wins.

Double Gem is a simple game. The visuals are basic but do the job well enough. There’s nothing too flashy about the features either. The only extras are the multipliers. In effect, you’re getting 2 straight up fruit machines for the price of 1 here.

If you’re after a game that delivers plenty of extras, then Double Gem won’t be for you. Simple, repetitive action is what’s on offer here. It’s not something we’ll be rushing back to any time soon though. I would much rather play other Stake Logic slots like Hardwell and The Book.