Last updated: 11-07-2026
Starburst runs on a straightforward 5x3, 10-payline grid, but with one genuine point of difference from most classic-format slots: it pays win-both-ways, meaning winning combinations count whether the matching symbols read left-to-right or right-to-left across an active payline. That effectively doubles the ways a given symbol run can register as a win compared to a standard left-only payline structure, without needing a more complex cluster or Megaways format to achieve it. It's a genuinely elegant solution for a 2012 release, and it's part of why the game still feels reasonably dynamic despite its age and simplicity. For context, win-both-ways mechanics have since become common across the industry, but Starburst was among the titles that helped popularise the approach well before Megaways and cluster-pays formats became the default expectation for anything marketed as dynamic or modern.
The other defining mechanic is the Starburst Wild — a rainbow-coloured wild symbol that only appears on reels 2, 3, and 4, never on the outer reels. When it lands, it expands to fill the entire reel it's on and triggers a respin, with that reel's wild locked in place for the respin. Up to three consecutive respins can occur if additional Starburst Wilds keep landing on the remaining eligible reels, and because the wilds stay locked once they appear, a run of two or three respins with wilds building across the middle reels can produce a genuinely solid win for the game's modest scale — even though there's no free spins feature in the traditional sense to look forward to. This respin chain is Starburst's entire big-moment mechanic; there's nothing else to trigger, and understanding that going in prevents the disappointment some AU players report when they discover there's no scatter-triggered bonus round waiting somewhere in the game.
| RTP Variant | Status | Expected Loss on A$100 | Notes |
|---|---|---|---|
| 99.06% | Highest published variant | ≈ A$0.94 | Rare configuration — most casinos don't deploy this rate. |
| 96.09% | Default / most common | ≈ A$3.91 | The figure most reviews and comparison sites quote. |
| 95.05% | Operator-selected | ≈ A$4.95 | Verify in-paytable before playing. |
| 93.05% | Lower-tier configuration | ≈ A$6.95 | Nearly double the expected loss of the default variant. |
| 90.05% | Lowest published variant | ≈ A$9.95 | Almost 2.5x the expected loss of the standard 96.09% variant. |
Author's tip from Connor Blake, Independent iGaming Reviewer & Player Safety Analyst: "Starburst has one of the widest published RTP ranges of any classic slot still in regular circulation — six documented variants from 90.05% up to 99.06%. That spread exists precisely because Starburst is so often used for bonus wagering, where the operator has more incentive to fine-tune the exact rate than on a headline game. Always check the in-game figure before wagering bonus funds through it."
It's also worth being specific about why the outer reels — reel 1 and reel 5 — never carry the Starburst Wild. That restriction is deliberate: it means the expanding wild can only ever cover the middle three positions, which caps how much of the grid a single respin chain can lock into place, keeping the mechanic's maximum reasonable win within the game's modest overall ceiling. It's a small design detail, but it's the reason a Starburst respin chain, however favourable, never threatens to spiral into an unexpectedly large payout — the structure itself enforces the game's low-volatility identity at a mechanical level, not just through the RTP figure.
Why casinos love putting Starburst in welcome bonuses
Starburst's appearance in AU casino welcome bonus offers isn't really about the game being especially appealing on its own merits — though its popularity certainly doesn't hurt — it's about the game's low volatility making it favourable from the operator's side for wagering requirement purposes. Low volatility means wins arrive frequently but in small, predictable amounts, which drains a bonus balance at a steady, controlled rate rather than in the sharp swings a high-volatility title would produce. For the operator, that's a more manageable, lower-risk way to let players work through a wagering requirement. For the player, it means Starburst free spins in a welcome package will typically produce a string of modest wins rather than one dramatic hit, and the 500x ceiling means even a genuinely lucky session isn't going to transform a bonus balance the way a high-volatility scatter-pays title occasionally can.
For AU players specifically looking for more ceiling while keeping the same core mechanic, NetEnt has released two direct successors worth knowing about. Starburst XXXtreme, from 2021, keeps the win-both-ways structure but adds random multipliers up to 450x on the middle reels, pushing the max win all the way to 200,000x at a 96.26% RTP — a dramatic departure from the original's modest ceiling while retaining the same visual identity and basic gameplay feel. Starburst Galaxy, released in 2024, pushes further still with a 25,000x max win, though its RTP figure isn't as consistently published across sources. Both successors are worth considering if you enjoy the original's straightforward mechanic but want genuine upside potential the 2012 version was never designed to offer.
Author's tip from Connor Blake, Independent iGaming Reviewer & Player Safety Analyst: "If a welcome bonus specifically offers Starburst free spins, go in expecting steady, modest returns rather than a life-changing hit — that's not a flaw in the offer, it's exactly what the game is built to deliver. If you finish the bonus wanting more ceiling, Starburst XXXtreme is the natural next stop with the same core feel and a genuinely different risk profile."
Responsible play
Starburst's low volatility and frequent small wins can make a session feel productive even when the net result is a gradual loss — the 22.6% hit frequency means wins arrive reasonably often, but most are modest relative to stake. Track your net position across a session rather than judging by how frequently the reels are paying out. Released originally in 2012 with mobile remasters following from 2013 onward, Starburst has had well over a decade to accumulate its reputation as NetEnt's most-played title — that longevity says more about its reliability as a wagering vehicle and its universal accessibility across almost every online casino than it does about win potential, which was never the point of this particular game. Players must be 18 or over. If gambling has stopped feeling like entertainment, Gambling Help Online is available 24/7 at 1800 858 858.
For higher-ceiling alternatives with a similar underlying simplicity, Sugar Rush offers a comparable entry point into more dynamic multiplier mechanics, while Piggy Bank Hold & Win matches Starburst's gentler pacing with a genuinely different bonus structure. For everything else, visit the Ozwin homepage, or if you already have an account, the login page gets you in quickly. New to terms like RTP, volatility, or hit frequency? The glossary explains them all in plain language.
