Booster

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Reviewed by: Emily Warren Linkedin
06.07.2025
Booster is a slot machine that comes from game developer iSoftBet and brings players back to the more classic symbols with a retro feel, but at the same time you get the feeling that when you play Booster you end up in an intergalactic adventure.
18 + - play responsibly-Terms & Conditions apply - min. deposit$ 100-0x wagering requirements
⭐ Best casino games ⭐
18 + - play responsibly - new customers only - wagering requirements casino X20 - wagering Free Spins 0x - winnings are real money-wager within 60 days.
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18+ years-Play responsibly, The National Gambling Exclusion Scheme. the offer is valid for new players from september 1, 2020 onwards. My. deposit 100$. Cash free Spins are valid for 60 days. Cash free Spins are wager-free. winnings are real money. The free bet is valid for 60 days with no wagering requirements.

You can find classic symbols among their ranks, such as BAR signs, diamonds, and 7s. Yet, each is updated in terms of color and overall look. The panoramic playing field is quite a different kettle of fish. It really does look like the inside of a high-tech spacecraft, and as you "pilot" the thing, you can't help but stare, slack-jawed, at how the stars seem to slide past the "windows" of your ship.

About The Slot Machine

In Booster, you can find many functions that boost your game, like bonus play, multiplications, and free spins. The game has an RTP of 97.40%. It is in classic format with 5 reels on 3 rows and a total of 25 selectable paylines.

You have the option to set how much you want each line to be worth that you play on and can thus adapt the game to how you want to make your bets, which range from low amounts of $0.01 to or up to $1 on or per line. There is only one bonus game in Booster, but in the game itself, you have the opportunity to win some really good prizes that amount to either coin winnings of up to 6000 coins or free spins with or without multipliers.

Booster functions

Booster features various symbols, each with distinct values. The lowest-valued symbol resembles three black bars, each with white text, that are stacked at different heights of one, two, and three lines. We can also see two different representations of the number 7, one in blue and the other in an orange hue. Yellow stars...

The symbol that gives the highest win is if you manage to get a large, shiny diamond in purple.

Besides these basic symbols, some other special symbols warrant your attention. One of these is the scatter symbol, which is the key to launching the game's bonus round and can deliver some seriously nice payoffs. The scatter symbol is a large, circular shape that might be reminiscent of one of the windows on the spaceship. This one big circle is not just the scatter symbol but also the symbol that activates free spins, multipliers, and bonus rounds.

Our Rating
Bonuses
80%
Graphics
81%
Entertainment
88%
Game information
Games 2017
Max profit 100 000 coins
Reels / paylines 5 / 25
Theoretical payback-RTP 97.4
Coin value 0.01 - 25
Total effort 2.50 - 1000
Volatility N / A
Free spins Yes
Bonus features Free spins, multiplier, scatter symbols, bonus games

Booster bonuses, free spins and special features

In order to receive Bonus Games in Booster, obtain three or five round symbols that flash. Then, throughout several rounds, you may win free spins, coin wins, or free spins with multipliers. This last option allows you to win even bigger, as you can quintuple your winnings.

The game features a box that hands out free spins with absolute certainty. Fifty shiny bits and baubles came out of it. Fifty pieces came out of it in total. And they are also incredible pieces—shiny bits and baubles. For one, they came out with a very high number. For another, they came out with a multiplier that doubled everything that happened during these spins.

When the free spins are active, it is wise to keep watch for any scatter symbols that might show up, as these can lead to much bigger wins.

booster pulse functions

Booster graphics and sounds

A superb combination of symbols from the days of yore with a space theme is what iSoftBet has managed to create. Among the symbols used in the game, you'll find lucky sevens and BAR signs on transparent reels.

Melding a supermodern space environment with older retro symbols is no easy feat, yet iSoftBet has somehow done it.

Picture this: stars gliding past you, giving the impression that your spacecraft is traveling through the cosmos. This is the sensation of space—slow, smooth, and surreal. The background of the game has the appearance of distant stellar formations in shades of lilac, with animations that suggest the formations are subtly shifting, either because the ship is moving or because the formations themselves are animated and giving the player the perception of deeply layered space. Uniquely matched to this backdrop (and to what the game developers want you to feel while you are engaging with the game) is the soundtrack.

Booster payouts

Booster consists of 5 reels set on 3 rows, and you have 25 paylines, which is slightly atypical for the current gaming landscape. Varying off of the standard content we've come to expect from today's physical and online slot machines, these paylines provide unique opportunities for the player.

To locate the spin button and other functions, you must check below the playing field, underneath the control panel that is designed to look like a set of buttons.

This text provides instructions on how to use certain options when betting on a game. You can set the amount to bet, and you can also use an automatic function to make plays for you. If you use this function, you can set stop-loss limits so that your automatic player doesn't lose any more than you want it to. And if you win, you can set it so that it stops if your profits exceed certain preset amounts.

You have the chance to read all there is to know about Bonus games and the various symbols at the top of the playing field, where a menu selection sits.

In Booster, there are many opportunities to win great amounts. When the bonus game begins, there are 8 different winning scenarios you can hit, and these can pay out in two ways. Some of them give you free spins that you can then play to win even more free spins. Others give you coins when you win that can range between 1000 and 6000 coins, and sometimes they give you multipliers to use as well.

Summary

Booster is a slot game that iSoftBet developed. You feel as if you are in space and sitting in a spaceship when you play it. The game background is a purple swirl with stars that look as if they are moving and give the feeling that you are moving. It's a nice touch.

The game features symbols that are a blend of the traditional, slightly retro, 7s and various bar symbols. There are actually two different kinds of 7s, with one being in a more bluish color and the other being somewhat More Orange.

Also, three different variations come with BAR symbols. Then, you can stack them 1, 2, or 3 high. You can also find a diamond that's purple and a star that's gold.

The game features 25 paylines, with the playing field comprising 5 reels arranged in 3 rows. You can select your bets, which range from 0.01 to 1.00 per line.

Should you not wish to spin manually, you can opt for the automatic spin function, which can perform up to 1000 spins. You can also choose between having the game stop upon achieving a major win or having it stop when you reach a certain level of loss.

In booster there is only one bonus game, but unlike other games where you need to have the scatter symbols in a row, there is nothing needed here. So if you get at least three scatter symbols here, regardless of how they end up, you win a bonus game.

The bonus game commences when 3x3 squares are obtained, with each of the 8 squares containing different winning combinations, and the last square acting as a start button that reveals which of the bonuses you will win.

The bonus game provides you with the opportunity to win a maximum of 100 free spins. You can also win coins in various amounts all the way up to 6000 coins. What makes the bonus game exciting is that you can win free spins in several different ways, and the free spins come with a variety of multipliers that can boost your wins.

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