Starburst: expanding wilds and respins

The supplier version

NetEnt describes the original Starburst as five reels, three rows and up to ten play lines. Its game page lists 96.08% theoretical RTP for that published version. A Great Britain operator may use another approved configuration, so the live paytable is the final game-specific reference.

What a wild does

When a Starburst wild lands, it expands over its reel and can substitute for ordinary paying symbols. This can create or improve line combinations; it does not guarantee a win on every spin.

The respin

The expanding wild also triggers a respin. A respin is a further chance outcome, distinct from an awarded casino promotion and from a conventional bank of free spins.

RTP is not a promise

The 96.08% value is a long-run design figure on the supplier page. It cannot be applied to a short session or interpreted as the amount one person will receive after staking £100.

Read the respin separately from a paid spin

Worked mechanics example
Suppose an expanding wild occupies a middle reel. Its substitution can help an eligible combination on a fixed line, but the other reels still need suitable symbols. A neighbouring collection of attractive gems that does not satisfy an active line has no value merely because it touches the wild. The expanded reel remains involved in the respin sequence under the game rules.

This makes Starburst a useful contrast with Reactoonz, where connected clusters drive wins, and Sweet Bonanza, which counts matching symbols anywhere. All three may show colourful groups, but their screens answer different questions: a line, a connected cluster, or a total symbol count.

A theoretical 96.08% design corresponds to a 3.92% theoretical house edge for that configuration. It is not a £3.92 fee on an individual £100 deposit: deposits, total stakes and short-session outcomes are different quantities. Use the RTP explanation before comparing percentages.