Starburst Isn't Fixed Anymore: The Game That Changed Without Telling You

For years, Starburst at 96.09% was the gold standard of 'play this and you know exactly what you get.' Every guide — including RTPTrack's own — listed Starburst alongside Blood Suckers as a guaranteed fixed-RTP option. The advice was simple: play Starburst at any casino and you get 96.09%. That advice is no longer accurate.

The April 2020 change

In April 2020, NetEnt added Starburst to its operator-configurable RTP programme. The game now ships in six configurations: 99.06%, 98.05%, 96.09%, 95.06%, 94.05%, and 90.05%. The 99% and 98% variants almost never appear in the UK — they are typically reserved for promotional or jurisdiction-specific deployments. The 96.09% variant remains the most common UK deployment. But the 94.05% and 90.05% variants are available to any UK operator who wants them.

The change happened quietly. NetEnt did not issue a player-facing announcement. The certification documents updated, the operator-side tier menu expanded, and the public-facing marketing language remained the same. Most UK players who started playing Starburst before 2020 still believe the game is fixed at 96.09% because that was true when they learned it, and nothing in the player experience signalled the change.

What the verified data shows

Verified data shows Ladbrokes deploying Starburst at 96.10% (at or near the legacy theoretical). This is encouraging — it suggests major UK operators have not aggressively reduced Starburst. But the fact that reduction is now possible means the 'Starburst is always safe' assumption no longer holds universally.

The asymmetry matters. Before April 2020, no verification was needed — Starburst was 96.09% everywhere by mathematical necessity. After April 2020, verification is needed — Starburst might be 96.09%, or it might be 94.05%, or it might be 90.05%, and only the in-game information panel can tell you. The cost of verification is 30 seconds. The cost of not verifying could be a 6-percentage-point RTP gap that compounds across every spin.

What this means for the fixed-RTP strategy

The implications for the fixed-RTP strategy: players who relied on Starburst as a deployment-proof choice need to verify it at their specific casino. The in-game information panel should show the deployed figure. If it shows 96.09% or similar, the legacy deployment is intact. If it shows 94% or 90%, the operator has exercised the reduction option.

More broadly, the entire concept of 'fixed RTP' as a casino-selection shortcut needs an asterisk. A title that was fixed in 2019 may be variable in 2026. The provider's tier programme can expand to include legacy titles at any time without player notification. The only durable test is per-title, per-casino verification at the point of play. Our how casinos change RTP guide covers the operator-side mechanics in detail.

Which NetEnt legacy titles remain genuinely fixed

Which NetEnt legacy titles remain genuinely fixed? Based on current evidence, Blood Suckers (98.00%) appears to remain fixed — it predates the 2019 variable-RTP pilot and RTPTrack has not documented variable deployment. Dead or Alive 2 (96.82%) and Twin Spin (96.55%) were reportedly added to the variable programme alongside Starburst in April 2020, meaning they may also have reduced variants. Verification is needed title by title.

The safe list has shrunk. Players seeking guaranteed fixed RTP should focus on: Blood Suckers (98.00% — verify it remains fixed), Eyecon's entire catalogue (confirmed fixed by design), and pre-2016 NetEnt titles not included in the April 2020 variable rollout. Every other 'fixed' recommendation should be treated with caution until individually verified. Our fixed-RTP slots complete list has been updated to reflect this — Starburst now carries a variable-tier caveat alongside its 96.09% headline.

RTPTrack's correction

RTPTrack is updating all references to Starburst's fixed status across the site. We previously stated it was guaranteed. It is not. We are correcting this. The correction touches comparison pages, category landing pages, guides, and existing blog posts where Starburst was used as a fixed-RTP example without the variable-tier caveat.

We chose to keep Starburst on fixed-RTP-adjacent guidance with the caveat rather than remove it entirely because the practical reality remains that most UK deployments are at or near 96.09%. The headline figure still describes most player experience. But 'most' is not 'all', and players who want certainty rather than probability need to verify rather than assume. The tier programme explainer covers why providers expand variable-tier systems and what it means for player choice.