Starburst Galaxy has 9 bonus features. With Avalanches that leave Starburst Wilds behind, all wins contribute to the Feature Generator: they award various extras including symbol removals, wild replacements, expanding Starburst Wilds, line transformations and symbol upgrades. With the Galaxy Star, you get a 3x3 Starburst Wild on a 7x7 grid with wins seeing symbols replacing with up to 8 Starburst Wilds. This can fill the Galaxy Metre for another Galaxy Star. 3 Scatters will activate the Mega Star which adds a 2x2 Starburst Wild to the grid with Starburst Wilds created from symbol blasts. Importantly, scatters may contain multipliers up to 25x which are collected in the Multiplier Collect Metre and apply to all subsequent wins.
Avalanche
When you land a winning combination, the Avalanche feature is triggered. The winning symbols are blasted off the reels with a Starburst Wild placed in the centre area of the removed combination.
If the combination has an even number of symbols (i.e. 4), the Starburst Wild will move to the central left for horizontal wins and the central higher position for vertical wins.
If 2 winning combinations intersect on the 5x5 grid, at least 1 Starburst Wild will be placed in their central position. Starburst Wilds substitute for all paying symbols.
Finally, if 3, 4 or 5 Starburst Wilds line up but don’t form a winning combination, the highest prize based on the Paytable is awarded.
Feature Generator
When winning combinations land, they are collected in the Feature Generator. Every 5-win combinations won in succession randomly award 1 of the 5 following bonus features, in order:
- Destroy feature: removes 1 or more random types of symbols from the reels.
- Random Wilds feature: replaces 3 to 9 paying symbols on the reels with Starburst Wilds.
- Expanding Wilds feature: this transforms all Starburst Wilds on the reels into 3 Starburst Wilds (stacked vertically).
- Line Transform feature: fills a row or reel with a randomly chosen paying symbol.
- Upgrade feature: this upgrades 1 or more random symbols of the same type on the reels to a symbol type with a higher payout value.
Galaxy Star & Galaxy Metre

When the fifth and final feature in the Feature Generator is triggered, you will activate the Galaxy Star feature. With the grid expand to be 7x7 in size, a 3x3 Starburst Wild symbol is randomly added to the reels.
After wins have been awarded, all winning symbols disappear with 4 to 8 standard Starburst Wilds appearing. Once this happens, any remaining bonus features in the Feature Generator will activate.
When the 3x3 Starburst Wild appears, the Galaxy Metre comes into play and is activated. Every winning combination is added to the Galaxy Metre. When it reaches 50, the Galaxy Star feature is retriggered and the process repeats itself.
Mega Star & Multiplier Collect Metre

The Starburst Galaxy slot game comes with Scatter symbols. When 3 of them appear on the same base game spin, the Mega Star feature is triggered. A 2x2 Starburst Wild symbol is randomly placed on the reels after the current wins have been awarded. All winning symbols will disappear with 2 to 5 regular Starburst Wilds appearing.
Additionally, some Scatter symbols may contain multipliers of 2x, 3x, 5x, 10x or 25x randomly. These multipliers are collected in the Multiplier Collect Metre which apply to all wins until the end of the spin and subsequent avalanches.
Elevate

Finally, Starburst Galaxy comes with an Elevate feature which allows you to activate certain bonus features highlighted above. Choose from the following features that can be enabled per spin:
- Bonus Boost: This increases the chances of triggering the Galaxy Star feature for 3 times your total bet.
- Mega Star: For 10 times your total bet, this activates the Mega Star feature. You are guaranteed to land 3 Scatters.
- Boosted Mega Star: This activates the Mega Star feature and Multiplier Collect Metre for 50 times your total bet. You are guaranteed to land 3 Scatters that activate the Mega Star feature with at least 2 of them containing multipliers.
- Galaxy Star: For 100 times your total bet, you are guaranteed to trigger the Galaxy Star feature.
- Galaxy Star Bonanza: For 500 times your total bet, this triggers the Galaxy Star feature with 5 awarded features from the Feature Generator. A random multiplier between 2x and 75x also applies.