Starburst Galaxy

NetEnt returned to the Starburst universe more than a decade after the original with Starburst Galaxy, moving from a fixed 5x3 payline grid to a 5x5 cluster-pays layout. Groups of three or more matching symbols anywhere on the board, connected vertically or horizontally, trigger a payout, and every win clears the grid for new symbols to fall in behind it.

The symbol set carries over the familiar gems, a lucky seven and a BAR, now paying between 2x and 20x for five matching pieces, rising to 10x-250x for seven-of-a-kind once the grid has expanded. Wild symbols aren't scattered randomly; they're generated by play, dropped into the centre of any non-wild winning cluster once it clears, and they substitute for everything except the scatter.

Every winning cluster also advances a Feature Generator, which fires a random modifier after five wins in a row: reels can be cleared of a symbol type, three to nine positions can be turned into wilds, existing wilds can stack into vertical triples, a row or reel can be transformed into a single symbol, or a symbol type can be bumped up in value. Landing the fifth of these modifiers opens the Galaxy Star Feature, expanding the board to 7x7 and dropping in a 3x3 wild before further wilds spread across the grid; a separate Galaxy Meter tracks toward this same state independently, filling every time 50 wins have registered once that first big wild appears.

A scatter-triggered path exists alongside it. Three scatters landing in one spin call in the Mega Star Feature, which drops a 2x2 wild once the avalanche settles and adds two to five more wilds on the next drop; Mega Star can also attach multipliers between x2 and x25 to the scatters involved, and those multipliers accumulate in a Multiplier Collect Meter that applies to every winning cluster for the rest of the round.

Players who don't want to wait for these to build naturally can buy in through the Elevate menu: a 3x stake Bonus Boost nudges the odds toward the Galaxy Star, a 10x Mega Star buy guarantees a spin with three scatters, a 50x Boosted Mega Star adds guaranteed multipliers to at least two of them, a 100x buy guarantees the Galaxy Star outright, and a 500x Galaxy Star Bonanza triggers it fully loaded with all five Feature Generator modifiers plus a bonus multiplier up to x75.

RTP is published at 96%, with lower configurations of 94% and 88% also in circulation depending on where the game runs. Volatility is rated medium-high, the maximum win reaches 25,000x the stake, and bets range from 0.20 to 28. Between the Feature Generator ticking over in the base game and the two larger features layered on top of it, sessions can move from ordinary cluster wins into rapidly escalating grid states without much warning.