Starburst Galaxy slot

Starburst Galaxy slot: what changed from the original

NetEnt released Starburst Galaxy in 2024 as a new take on the original Starburst. The name and the wild survive, but the structure is new. Instead of five reels of three symbols with fixed lines, the game is played on a square grid that starts at 5×5 and can open up to 7×7.

We have only included figures we could verify. Volatility and the exact win rules are not in our checked data, so the game’s own information screen is the place to confirm them. NetEnt’s other titles are on our NetEnt studio page, and the slots hub links every review on the site.

How the features work in Starburst Galaxy

The headline mechanic is the Galaxy Star feature. When it plays, the grid is opened out to its full 7×7 size, so the board grows from 25 positions to 49. On that larger board, a Starburst wild appears as a single 3×3 block, covering nine positions at once rather than one.

A wild of that size changes the geometry of a spin. A single wild square can only help the few combinations that pass through it, whereas a 3×3 block sits across three rows and three columns together, so it can link up symbols on every side of it. On a 49-position grid, the block fills a little under a fifth of the board.

That is as far as the verified description goes. What triggers the Galaxy Star feature, how long it lasts and whether anything else happens during it are set out in the game’s rules, and we would rather point you there than guess. The olbg Starburst Galaxy review (opens in a new tab) also describes the feature. For background on large and expanding wilds generally, see our guides to wild symbols and expanding wilds.

Starburst Galaxy RTP: 96% or 94%?

Some slots are supplied in more than one RTP setting, and the casino chooses which to run. Starburst Galaxy is one of them: the standard version returns 96% and a 94% version also exists. Two percentage points may look small, but it is the difference between a 4% and a 6% house edge, so the lower version takes half as much again from every pound staked.

Put another way, if you stake a total of £500 over a few sessions, the expected cost is £20 at 96% and £30 at 94%. Neither figure predicts a single session; both are long-run averages.

1. Open Starburst Galaxy at your casino before staking.
2. Find the information, help or paytable screen (often an i or ? icon).
3. Look for the stated RTP or return to player figure.
4. If it shows 94%, you are on the lower version; decide whether you still want to play it.
5. Repeat the check at any other casino, since the setting can differ between sites.

UK rules make this check possible. The Gambling Commission’s RTS 3 standard on game descriptions and the likelihood of winning (opens in a new tab) requires the RTP or chance of winning to be available before you play, and our RTP information rules page explains what operators must show.

Playing Starburst Galaxy on a £20 budget

Because volatility is not in our checked data, budget around the edge and the max win rather than an assumed swing rating. A 25,000× ceiling, fifty times the original game’s, is a strong hint that more of the return is held back for large outcomes than on classic Starburst, which normally means longer quiet spells. Treat that as an inference and confirm the volatility shown in the game.

The average cost of spending £20 once is identical whatever the stake, because it depends only on total money staked. What changes is how many spins, and therefore how many chances at the feature, you get for that money. Our expected value guide shows the formula, and volatility explained covers why spin count matters on swingier games.

Starburst Galaxy max win in context

The top prize is 25,000× stake: £2,500 at 10p, £25,000 at £1, £50,000 at the £2 limit for 18 to 24-year-olds and £125,000 at the £5 limit for over-25s. Results like that sit at the extreme tail of the game’s maths and almost no session comes close. The everyday experience is shaped by the edge you just saw in the tables, not by the ceiling.

UK rules for Starburst Galaxy

Starburst Galaxy is a reel-format online game, so the UK slot stake limits apply. Read the Commission’s own guidance on online slot stake limits (opens in a new tab) for the detail: £5 per game cycle for players aged 25 and over, £2 for those aged 18 to 24. Spins must take at least 2.5 seconds, autoplay and turbo modes are banned, and returns no larger than the stake can’t be celebrated. These rules are summarised on our online game design rules page.

Starburst Galaxy against the rest of the series and other grid slots

Cubes is the nearest match in structure, with a grid that also grows during play. Reactoonz uses a fixed 7×7 board throughout. Our cluster pays guide explains how many grid slots count wins.

Starburst Galaxy pros and cons

It suits players who liked the Starburst look but want a bigger, more modern game, and who will take a moment to check the RTP version. Players who loved the original for its calm, steady sessions may prefer to stay with it.

Where to play Starburst Galaxy in the UK

Whether a partner runs Starburst Galaxy, and at which RTP, is something to check in its lobby and the game’s help screen. Our partners’ welcome offers are slot spin offers for new customers aged 18+, and terms apply.

• PlayOJO: 80 free spins on Big Bass Bonanza at 10p each with a first deposit of at least £10. No wagering; winnings are cash. Excludes Northern Ireland and can’t be combined with other offers.
• Coral: deposit and bet £10+ on slots to get 100 free spins (10p each) on selected games, offer running 1 October 2026 to 1 February 2027. You have 48 hours to accept and 7 days to use them; winnings aren’t wagered. Excluded deposits include PayPal, Neteller, Skrill, Paysafe, prepaid and certain debit cards.
• Ladbrokes: 50 free spins a day for 10 days (500 maximum) at 10p on selected games after spending £10 on slots. Claim each batch by 23:59 and use within 7 days, with no wagering. PayPal, Paysafe, Skrill, Neteller, Moneybookers and prepaid deposits are excluded.

The same company runs Coral and Ladbrokes, so holding new accounts at both may not be possible. See our Ladbrokes review and the guide to no wagering bonuses.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.