Boom - Review, Demo Play, Payout, Free Spins & Bonuses

Introduction

Can you defuse the bombs to increase your winning potential? Boom from Playtech Origins is one of those video slots that offers not one but two bonus games as well as the chance to win one of four jackpots. Wilds and scatters both pay in this slot, with the wilds expanding for the chance of more wins. Trigger free spins with the bomb scatter or land the wire-clippers symbol to defuse the bombs and unlock more rows in the hold and respin feature. Read on in this Boom slot review to find out how.

Theme, Graphics & Soundtrack

It's all about having a steady hand in this Boom online slot machine, with coloured wires, bombs, goggles and wire clippers among the higher-tier symbols that populate the reels in this game. Set on an electric blue background, the game is played to a suspenseful soundtrack and an ominous ticking of a countdown clock. Lower-tier symbols in the base game range from A to 10, while the hold and respin symbols have digital LED-style numbers showing potential cash wins.

Boom RTP and variance

The theoretical return to player for Boom is 96.59%, and the variance is medium.

How to Play Boom

1. When the game loads you'll be presented with a splash screen which outlines the main features of the game. Touch to continue.
2. Before you start, touch the information button to familiarise yourself with the paytable and touch the ? button for more details on the game's rules.
3. Adjust your bet by touching the coins button. Use the + and - buttons to select your bet per spin.
4. To speed up the spin animation, toggle the turbo button. 
5. For autoplay, touch and hold the spin button to select the number of automatic spins and the win and loss limits. When using the autoplay function, keep an eye on your balance, even if you're playing free slot games, and always be ready to hit the stop button before you need to.
6. You're ready to start. Please gamble responsibly.

Bet Sizes & Paytable Wins 

All wins except for the scatter are divided by the line bet. The line bet is the total bet divided by 50. Total bets range between 0.10 and 450 coins. The top-paying symbols on the paytable are the Wild and the three bombs, which will pay 150x the line bet for five of a kind.

Max-win 10,000x

Volatility Medium

Top RTP 96.59%

Boom Bonus Features

Free Spins

A popular feature among video slots is free spins, and Boom grants eight free spins for four or more scatters. During the free spins, the third reel will contain wilds and blue or green bomb symbols only to increase the chances of wins and trigger the Hold and Respin feature. Free spins can be retriggered.

Hold and Respin

Six or more blue or green bomb symbols will trigger the Hold and Respin feature. Bomb symbols (not to be confused with the scatter bomb symbol) contain cash prizes, a wire cutter symbol or a star. The six bomb symbols are held and the reels are extended to nine rows high. The six upper rows are 'locked' with two bonus bombs each. The feature starts with three respins. Each time an extra bomb lands on the reels, the respins are reset back to three. When the respins run out, all cash prizes are added together.

Land two wire cutters to unlock the next row on the reels. At the end of the feature, any bombs on row seven will be multiplied by x2. Any bombs on row eight will be multiplied by x5. Any bombs on row nine will be transferred into star symbols. Each star symbol at the end of the feature will be exchanged for one of the four jackpot prizes. A jackpot prize can be won more than once. 

Boom Review

Boom is an engaging medium-volatility online slot machine with two bonus features. Its visual style is simple but effective, with uncomplicated symbol designs with winning combinations highlighted by electrical sparks. Although the maximum number of free spins is only eight, the feature can be retriggered, and the hold and respin feature can be triggered within the free spins. While the hold and respin feature is not new among slots, the added dimension of unlocking additional rows by defusing bombs with the wire clippers works well with the theme. Fans of slots with multiple features may also be interested in slot games like BarCrest's Rainbow Riches slot.