There’s a back-to-basics feel to this online slot machine from iSoftBet with it’s traditional symbols and pared-back design but it also comes with a range of bonuses: it’s called Booster and you can find out how it all works right here.

Booster is a five reel slot with three rows and twenty five fixed paylines; those reels are transparent and through them there’s a scene of moving stars which makes us feel as though we’re on the Starship Enterprise.

We said the symbols were traditional and here’s the proof – we have red sevens, blue sevens, a gold star, single/double/triple bars and a pink diamond. The latter is the most valuable and worth 2000x your line stake for five on an active payline.

There’s no wild symbol in play here but there is a bonus icon which is an orange lightning flash that activates the main feature.

Bonus Features

Boosters Bonus Game

This is triggered by landing three of the lightning flash bonus symbols anywhere in view; you will now be faced with a grid displaying eight bonus options around the perimeter so press the ‘Start’ button in the centre and wait for one of the following options to be selected:

• Five free spins + 5x multiplier.
• Ten free spins + 2x multiplier.
• Ten free spins + 3x multiplier.
• Fifty free spins + 2x multiplier.
• Fifteen free spins.
• One hundred free spins.
• 6000 coins.
• A random award of 3-50 spins + a multiplier of 1x-5x or a coin award of up to 6000.

It’s not possible to trigger the feature again from within this round but any bonus symbol landing will still pay a scatter prize.

Verdict

Booster is another very playable slot from iSoftBet with some smooth, colourful gameplay and a soundtrack to match; will you win 100 free spins or just 15? There’s only one way to find out! This game comes with a nice high RTP of 97.40%.

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