Big Bang Boom (NetEnt) – Review & Demo Play

The Big Bang Boom Slot Game

I loaded Big Bang Boom and the first thing that hit me was the neon graffiti wrapped round a brick wall. NetEnt runs a 4x4 grid that can swell as wins land, with bricks popping away to show fresh positions. The vibe is urban, fast, and it suits the pace. You start on 256 ways, yet those ways can grow when the wall opens up. Once the board breathes, the avalanches can chain and you feel the design feeding the gameplay.

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Symbols and Payouts in Big Bang Boom

Symbols and payouts in Big Bang Boom keep the theme tight. There are 8 regulars and 7 Bombs, and you will not find wilds or scatters here. The paytable lays out the combos and prize values, and all wins scale with your stake. The graffiti set carries across the icons, so the board looks consistent when reels expand. Bombs act as feature triggers rather than pay symbols, and their behaviour ties straight into how the wall opens.

The low set is J, Q, K, and A. For four of a kind, returns sit between 0.16x and 0.20x. Premiums are a blue smiley face, a green butterfly, a heart, and a crown, stepping up through the range to 1x for the crown. The heart caps at 0.6x. Payouts start from three on adjacent reels from the left side. I rate the table clear and easy to read, which helps when the grid keeps changing size.

Big Bang Boom Symbols and Paytable

Symbol	Quantity	Payout
	4	x1
	3	x0.4
	4	x0.6
	3	x0.28
	4	x0.4
	3	x0.2
	4	x0.4
	3	x0.2
	4	x0.2
	3	x0.12
	4	x0.2
	3	x0.12
	4	x0.16
	3	x0.08
	4	x0.16
	3	x0.08
	Special
	Special

Big Bang Boom Slot Bonus Features

Big Bang Boom uses avalanches and expanding reels to set the tempo. Each win clears its symbols and fresh ones fall, with new positions revealed when a win touches a covered brick or a bomb goes off on it. In the base game the grid can only grow vertically. You can reach ten rows per reel by adding layers above and below. Progress resets when no new win hits, so the screen shrinks back before the next paid spin.

The Super Bombs are the stars. Vertical, Horizontal, Diagonal, and Plus-pattern bombs remove symbols along their paths and help open bricks. The Omni-directional bomb clears all adjacent icons. Cluster bombs uncover three to five covered spots in the main game and do the same over empty positions in free spins. The Persistent bomb is special, showing up only in the bonus. It stays on the board and explodes again and again as the features play out.

Free spins in Big Bang Boom land when all reels hit ten rows. I got 6 spins on a 4x10 setup, with scope to extend the width to 8x10. Paying symbols vanish and prize icons stick on the wall. Bomb blasts that pass over a prize double its value, and prizes can reach 1x to 2048x. Treasure Prize reveals include a +1 spin and large awards of 16x, 32x, or 64x. A bonus buy sits at 75x or 150x stake.

How to Win at Big Bang Boom Slot

How to win at Big Bang Boom is straight work. Match symbols on 3 or more adjacent reels starting from the left. The ways shift from 256 up to 10,000 as the wall opens. Avalanches can stack wins within the same paid spin. Stakes are set with the plus and minus controls. I ran bets from 0.25 to 100 a spin, which gives room to adjust the pace. When no new win lands, the grid resets to 4x4.

The spin button does the job, with turbo and autoplay sitting close by if you want a quicker round or hands-off sequences. Bombs explode before the avalanche resolves, which can nudge fresh positions into play. I found that once a board breathes to six or more rows, the reels start to feel alive, and clusters of wins come in bursts. That momentum can stop fast, so I keep stakes steady and let the game cycle.

Big Bang Boom Slot RTP & Volatility

RTP and volatility in Big Bang Boom sit in the high risk camp. The default return is 96.07 percent. Alternative models exist at 96.05, 94.08, 94.04, and 88.10 percent, so I always check the info tab before a session. Buying the bonus can tweak the maths to 96 or 96.05 percent based on the option picked. Volatility is high and the top win is 4300x your stake. Expect stretches of silence between lively bursts.

The Final Thoughts on Big Bang Boom

Big Bang Boom feels fresh for NetEnt and plays with a proper sense of chaos. The graffiti wall, the way the grid grows, and the Super Bombs all feed into that arcade mood. Free spins turn the board into a prize screen that can snowball when blasts keep doubling values. The 4300x ceiling is modest for the volatility, yet the ride is fun. I like it for quick sessions where I chase a board that opens wide.