Starburst XXXtreme Slot (NetEnt)

The Starburst XXXtreme slot is played on 5 reels, 3 rows and 9 fixed paylines. With 1 fewer payline than its predecessor, 3 or more matching or identical symbols from left to right, starting from the leftmost reel and on any of the 10 paylines will see you land a winning combination. With only the highest win per payline award, symbols must also land on successive reels.

In terms of the stakes range, you can play Starburst XXXtreme from 10p to £50 a spin. The max bet may be limited to £10 or even £5 per spin (it’s £5 a spin at Unibet Casino for example). To change your bet, use the Coins icon to see all options on 1 screen. If you’re a non-UK player, there are Autoplay and Turbo Mode options.

The Starburst XXXtreme RTP rate is 96.26%. Above the 96% online slots average, it’s also the only RTP version available meaning you won’t find a lower one at online casino sites. Very high volatility, winning combinations will land every 5 spins on average as the hit frequency rate is a flat 20%.

With regards to payout potential, the Starburst XXXtreme slot can deliver 200,000 times bet max wins. This is significantly higher than the 500-times bet offered in the original Starburst game. As you’ll discover below, Starburst Wilds are key to the bigger wins.

Chris Taylor

The king of slots

Chris Taylor is an industry veteran originally from Gibraltar. Having worked in the online gambling industry since 2004, Chris loves slots and has reviewed over 10,000 online slot games. Running a slots-focused website for 13 years, Chris is the go-to guy for everything slots-related.

Released on the 15^th of July 2021, the Starburst XXXtreme slot was a highly-anticipated release from NetEnt. With the same space theme, this new-age version of the timeless gem sees you fly through space to reach for the stars.

Still capturing the original essence of the classic game, Starburst, you head to a far-away galaxy which is brighter and offers high-definition graphics and animations. Using a similar soundtrack that ties in with the original, everything is crisper and clearer.

On the reels, you’ll come across 5 different brightly lit gemstones as well as a lucky red 7 and golden BAR. The BAR symbol pays the most offering 50 times bet payouts for 5 across any payline. A screen full of BARs will result in a 500 times bet payout.

Starburst XXXtreme of course comes with a Starburst Wild symbol. Appearing on reels 2, 3 and 4 and substitutes for all symbols, it expands to take over the entire reel with a free re-spin awarded. Unlike the original game, it also awards a random multiplier (more details on this below). Below is a list of symbol payouts and functions:

• Purple Gem/Blue Gem: 3, 4 or 5 = 0.5, 1 or 3 x bet
• Orange Gem: 3, 4 or 5 = 0.7, 1.5 or 4 bet
• Green Gem: 3, 4 or 5 = 0.8, 2 or 5 x bet
• Yellow Gem: 3, 4 or 5 = 1, 2.5 or 6 x bet
• Lucky Red 7: 3, 4 or 5 = 1.5, 3 or 20 x bet
• BAR: 3, 4 or 5 =2.5, 5 or 50 x bet
• Starburst Wild: Substitutes, expands, contains a multiplier + award a re-spin

Starburst XXXtreme Mobile

Produced using HTML5 technology, Starburst XXXtreme is compatible with laptop, PC, tablet and smartphone devices. If you like playing at mobile casino sites, it’s available to play on iOS and Android handheld/smartphone devices as standard. The 5x3 setup works well on a mobile device too.

Starburst XXXtreme has 3 bonus features. Starburst Wilds are key and expand to give you a wild reel with a free re-spin. Containing multipliers up to 150x, they can appear on the 3 middle reels for a 450x multiplier. Randomly landing on the reels too, non-UK players can guaranteed 1 or 2 Starburst Wilds on each spin.

Starburst Wilds

Starburst Wild symbols appear on reels 2, 3 and 4 (the 3 middle reels). As well as substituting for all other symbols, Starburst Wilds expand on the reel it lands on with a free re-spin awarded. Importantly, the Starburst Wild has a random multiplier between 2x and 150x.

If more Starburst Wilds land during the re-spin, they will also expand and award another re-spin. It will also contain a rand multiplier up to 150x. If you’re lucky, a third Starburst Wild can land giving you 3 re-spins, 3 fully wild reels and each with a multiplier of up to 150x.

Random Wilds

Starburst XXXtreme comes with a randomly triggered Random Wilds feature. This can come into play, randomly of course, after a base game spin or re-spin. Awarding 1 to 3 Starburst Wilds on any of the 3 middle reels, each Starburst Wild will have a random multiplier of up to 150x. 3 of them will give you a 450x multiplier if you’re lucky.

XXXtreme Spins

Not available in the UK, there is an XXXtreme Spins feature which is essentially a Bonus Buy option. If you use the feature, you are guaranteed 1 or 2 Starburst Wild symbols landing on each spin. With the RTP rate rising to 96.45% for both options, below are the details: 

It’s important to note that the XXXtreme Spins feature remains in play until deactivated. Use the box in the bottom left-hand corner of the screen to activate/deactivate.

With the original Starburst game being arguably the most popular of all time, this sequel was highly anticipated. Following up on such a classic is no easy task. With the Starburst XXXtreme slot, NetEnt has managed to keep true to the original with similar gameplay and graphics.                         

With 9 paylines instead of 10, there are no Win Both Ways wins. To compensate, NetEnt has added random multipliers of up to 150x to the expanding Starburst Wild symbols. If 3 Starburst Wilds land during the re-spins, their multiplier values can combine up to 450x!

With a higher RTP rate (96.26% vs 96.09%), the major difference between Starburst XXXtreme and Starburst is the win potential. The XXXtreme version can deliver 200,000 times bet maximum wins whilst the original pays up to 500 times your total bet.

If you’re located outside the UK, the optional XXXtreme Spins feature will see you play with 1 or 2 guaranteed Starburst Wilds on each spin. The top price of 95 times your total bet for 2 Starburst Wilds is pretty reasonable too.

In summary, the Starburst XXXtreme slot strikes the perfect balance between the original and innovation. Offering huge win potential, it’s more than an appealing proposition for lovers of the original game and those who want to try winning big.

NetEnt has gone on to release Starburst Galaxy in October 2024. Offering 25,000 x bet max wins, it has more bonus features than the previous 2 Starburst games as fill meters to bring in 2x2 and 3x3 Starburst Wilds, various modifiers and multipliers into play. 

Big Win Potential

If you’re looking for the slots with the highest max wins, the following games are recommended:

• Tombstone RIP (Nolimit City): 300,000 x bet max wins
• Peking Luck (Pragmatic Play): 180,000 x bet max wins
• San Quentin (Nolimit City): 150,000 x bet max wins
• Money Train 4 (Relax Gaming): 150,000 x bet max wins
• Razor Returns (Push Gaming): 100,000 x bet max wins

The Starburst XXXtreme slot review was written by Chris Taylor from our OLBG Expert team who who written over 10,000 slot game reviews in an iGaming career spanning over 2 decades. It was then verified/checked by Jenny Mason, our prime Slot reviewer who has 17+ years working in online gambling, top UK brands. 

Jenny Mason

Slots content manager

Jenny Mason has more than 17 years of experience in the online gambling industry and has worked for some of the UK’s top betting brands. She started at OLBG in 2014 and her role involves creating great content and looking after the marketing activity. Jenny is knowledgeable in all areas of online sports betting and has an interest in slots and bingo.