How can I play Booster slot for free?

Yes, Booster slot can be played for free in free play mode at many casinos that feature iSoftBet titles. On YummySpins, you can explore its features and read all the details you need before trying for real. Most sessions run smoothly with unlimited play time. No downloads required, launch it in your browser instantly.

How high is the RTP of Booster slot?

The RTP of Booster slot is approximately 97.40%. That percentage shows reliable long-term returns, giving players a safe and enjoyable experience. Most modern slots sit somewhere between 92-97%, so this figure gives players a fair reference point for comparison.

What slot has 99% RTP?

Released by select providers focused on player-centric design, 99% RTP slots sacrifice profit margin for player appeal. This explains why top-rated titles such as Book of Dead and Gold Rush target the industry standard. Players should focus on documented strong performers rather than chasing the mythical 99%.

Which slot has the best bonus game?

Wondering which studios lead in bonus design? Companies like Rival, RTG, and Betsoft regularly produce memorable gameplay, pairing strong artwork with fair math. In practice, bonus rounds feel meaningful rather than purely decorative.

Written byYummySpins Editorial TeamVerified authorCasino reviews & guides• 200+ slots tested

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Booster slot

4.5

(21 votes)

by iSoftBet Verified Video slots

Updated 2 Sept 2026

Booster mostly favours frequent wins, with the odd bigger swing thrown in, and blends Adventure and Diamond influences.

Play for real money

Slot bonus

100% up to $16,500 + 350 FS

Release date

2017

Last update

2 September 2026

Free Spins

Yes

Game properties

Reels	5
Paylines	40
Variance	Low-Med
Game Provider	iSoftBet

Ways to Win	25
Technology	FLASH, JS, HTML5
Theme	Adventure Diamond FantasySci-Fi & Space
Jackpot	2000

Max Bet	2
Bonus Game	No
Min Bet	0.01

Online casinos where you can play Booster slot

Casino	Bonus	Code	Review	Play
Golden Crown Casino	100% Bonus up to $16500 + 350 Free Spins		Review	Play
PlayAmo Casino	Bonus up to $6500 + 150 Free Spins		Review	Play
Spins of Glory Casino	250% Bonus up to $3000 + 250 Free Spins	No code	Review	Play
Extreme Casino	300% Bonus up to $5.000 + 250 Free Spins		Review	Play
SlotBunny Casino	120% Bonus up to $200	No code	Review	Play

Booster slot review 🚀

💖 Beyond the solar system and past the milky way, become a cosmic explorer in Booster slot game with a stellar atmosphere. Fly at the speed of light with those bonuses. 100 Free spins welcome bonus on Booster slot is waiting for new players!

This iSoftBet powered video slot game, Booster review, was released in 2017 with 5 reels and 40 paylines. The RTP of this game is 97.4%. The theme of the game Booster is the Space world. The background is star-studded space with a selection of classic fruity symbols.

Symbols 🌟

Booster slot comprises number “7” as the main symbol of the game, which is backed with star symbol doing the work to pay as a part of regular symbols. BAR symbols are the low payout ones where the 3x BAR pays 100 coins the most.

Booster slot demo video 📽️

Features 🔥

The purple diamond symbol in Booster slot game grants 2,000 coins for five symbols of the same kind. Since there are no wild symbols, the only unique symbol is Scatter symbolized as a logo of the game with the label Bonus on it.
Interestingly, the background turns red and the bonus screen appears when you land amid three and five of the lightning flash bonus symbols. The possible bonuses that you could win are 5 free spins with five times multiplier. 10 free spins with 2 or 3 times win amount, 15 free spins, 50 free spins with 2 times win multiplier and 100 Booster free spins. There are also chances that you hit the jackpot amount of 6000 coins.

Booster runs on 5 reels and 40 paylines, a iSoftBet game from 2017.

No RTP is recorded for Booster on our side. Volatility runs low-medium.

FAQ

YummySpins Editorial Team

Editorial Team

Our team of iGaming experts combines decades of experience in casino gaming, data analysis, and industry regulation. We're committed to transparency and helping players make informed decisions.

Player reviews

96.49%RTP

MediumVolatility