iSoftBet is not the only software developer to dig back into the past to remake retro-style slots, but it is definitely among the few that adds a little extra to their offer.
Booster Slot comes with crisp visuals which is not necessarily expected for a slot based on old-school slot machines. The 5×3-reel grid is set against a starry sky with a soft tune playing out in the background. The game’s reels are designed to be transparent with symbols represented by colourful imagery which intensifies the beauty of the slot.
The slot is just as good looking as it is rewarding as your chances of winning big are attached to a big game payout of up to 6,000 coins which can be triggered during the bonus game.
How to play
To get the game started, you would need to place a stake. Make a choice from the bet limits of 0.25 credits up to 25 credits per spin. Before you start spinning, you can choose to set a number of auto spins from 5 to 1,000. The feature also allows you to set loss and win limits.
With everything in place, you can go ahead to spin the reels. You will have to match at least three of any symbol on any of the 25 Paylines. The gem symbol is the most valuable symbol offering 2,000x the stake with 5 matched. It is also the only symbol that will award a payout with 2 on the reels.
You will also find a red 7 and a blue 7 paying 500x and 200x the stake. Going down the paytable, you will find stars offering 150x the stake, triple bars triggering 100x the stake, double bars paying 75x the stake, and single bars giving you 25x the stake, all when you collect 5 of a kind on the reels.
Booster Slot Special Features
This slot leaves out wild and scatter symbols but instead includes bonus symbols that will trigger the bonus game.
3, 4, or 5 bonus symbols anywhere on the reel will trigger the Bonus Game. This feature gives you a chance to win up to 100 free spins and multipliers of 5x or up to 6,000 coins. The bonus feature cannot be retriggered.
Free Spins in Booster Slot
During the free spins feature, the bonus symbol when landed will offer a payout. You get 2x, 15x, and 30x your stake for landing 3, 4, and 5.
You won’t be able to trigger a jackpot prize as there is none on the reels, however, this slot offers a win potential of up to 6,000 coins.
Return to Player (RTP)
Though it isn’t heavy on bonus features, Booster Slot has its RTP set at an impressive value of 97.04%.
Booster Slot is not only big on graphics but the slot does impressively well when it comes to payouts. You might not find many bonus features on the reels, in fact, the slot does not offer wilds and scatter symbols, but it does reward hugely with a max win of up to 6,000 coins.