Rate This Free Game
(18 votes)
175 more slots

Get up to $4,500 + 300 Free Spins

What Will You Play Next?

Ka-Boom Slots

Ka-Boom is an online video slot machine from Merkur – a company that specialize in cutting edge online slot machines based on various themes and genres. The company offers games ranging from jackpot slots to live casino games and their latest release is the Ka-Boom slot machine offers something different to the norm.

Get ready for some explosive action as you spin the arcade reels in the search for the non-progressive jackpot of 2,000. The reels are bursting with different symbols that can really make your game play go with a bang.

Rules of the Game

Ka-Boom is a 5-reel, 5-pay line slot machine. You can adjust both pay lines and the coin value to suit your budget. Minimum stakes are 0.05 for all pay lines and the maximum is just 10.00 a spin.

The display panel to the lower of the screen highlights your cash balance, bet value and last win. The pay table is housed to the lower left of the reels and gives a brief insight into what the game has to offer – along with the payouts for each symbol.

Merkur have designed Ka-Boom to look as explosive as possible. Behind the reels are red, orange and yellow explosion images – just like you’d find in a superhero comic book. The reels are situated to the center of the screen and are black. Colors come from the various symbols that can be found on those reels, which are; box of rockets, bomb, yellow and red explosives, green dynamite, blue explosive box and two symbols bearing different multi-colored rockets.

Booming Jackpot

To get your hands on the 2,000 non-progressive jackpot, you will need to charm 5 of a kind of the box of rockets onto your pay line. The second highest symbol are the multi-colored rockets which offer 1,000 for matching 5 on your active pay line.

Bonus Features

When it comes to slot features, there isn’t much to explain. Firstly, there is a gamble feature – one that you can expect with all Merkur slot machines. Any win hat you manage to spin in on your reels will trigger the gamble option.

The buttons beneath the reels will change to show a gamble button – click to go for more or keep your original winnings, it’s up to you. If you gamble, you will be taken to the ladder of wealth. You have to click the button on your screen to try and climb up to the maximum that’s on offer, but be careful because you can slip down and lose the lot. Cash out at any time if you feel like lady luck isn’t on your side.

The bomb bonus symbol is a wild and will replace other symbols on the reels to help form winning combinations.

If you can spin in a bonus bomb on reels 1 and 5, this will award the bonus feature. This feature is amazing as it explodes all of the symbols already on the reels and awards their value. An example of this is we staked 10.00 a spin and when we triggered this bonus we accumulated 440.00 in wins.

Boom-Ing Good Fun

Fair play to Merkur because they have created a slot machine that really packs a punch. On first impressions, the slot machine is basic and doesn’t really offer much but when you start to play, only then do you realize that you can rack up some huge wins from the very little features on offer.

This low to medium volatility slot machine offers the majority of the wins via the bonus feature. Get two bombs on the reels and you know you are in for some explosive wins. You don’t have to bet big stakes to win big with this slot machine, you just have to play and look for the bonus feature.

We found plenty of wins would fall on the reels but the lucrative wins did come from the bonus round. The gamble feature is a strange one because if you don’t decide to gamble within a few seconds it takes it upon itself to credit your account with your original winnings. Make sure you press gamble as quick as you can if you wish to try and win more. Bear in mind that the gamble feature is a good way of losing your money, as there is no skill required in order to win – you click the button and the light will either jump up to a bigger win or slide down and down until you eventually lose the lot. You can collect your winnings at any stage of the gamble feature.

Free to Play Merkur Slot Machine Games

You Might Also Like

Casino Bonuses

Casino Bonuses

From welcome packages to reload bonuses and more, discover what bonuses you can get at our top online casinos.

Online Gambling

Online Gambling

Ready to learn all about online gambling? Then check out our complete guide, where we also rank the best gambling sites for 2024.

Mobile Slots

Mobile Slots

No matter what device you’re playing from, you can enjoy all your favorite slots on mobile. Find out how to get started.

Live Dealer Casinos

Live Dealer Casinos

Live dealer games are some of the most innovative and immersive offerings at online casinos. Learn about the top live dealer casinos with our expert guide!

Our Favourite Casinos

By subscribing you: consent to receive bonus offers and other emails from VSO; confirm that you are of legal age to gamble in your country of residence; and acknowledge that you have read and accepted our privacy policy. You can unsubscribe at any time. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

You've Won a Free Spin

Join RickyCasino now and get up to $7,500 + 20 Free Spins

Claim Bonus

Will You Win?

Choose one of the treasure chests to see if you've won an exclusive bonus.


Treasure Box


Treasure Box


Treasure Box


No thanks

You've Won!

Treasure Box

Enjoy Your Prize!

You've won an exclusive one-time only bonus at:

Get up to $1,500 + 100 Free Spins
Claim Bonus
No thanks

Report a problem with

Let us know what went wrong:

Submit Your Feedback

Thank you for providing feedback! We’re sorry didn’t work.

If you’d like to tell us more about your experience Click here.

While we resolve the issue, check out these similar games you might enjoy.