Full lines don't vanish. They light up as fuses.

A 9×9 block puzzle for Android phones. Hold lit lines for a bigger payout, then launch them all at once as fireworks.

Free. No ads. One optional cosmetic purchase.

Skyburst game board, a 9×9 night-sky chart, with three rows and three columns lit as sparking fuses; the payout reading shows ×21 and 9,450 above the gold launch button.

Skyburst is a block puzzle for Android phones with one new rule: full lines don't vanish, they light up as fuses. One tap on the launch button sends every lit line up as fireworks, and the more lines you hold, the bigger the payout. No ads, no account, and it works offline.

Bank now, or hold for more?

Lit lines stay on the board and still take space, so every turn asks the same question: launch now, or keep building? The payout grows with the number of lines you launch together, and a crossing cell counts once. Clear the whole board in one launch and the payout doubles.

90one row
510a row and a column together
9,450three rows and three columns together

The formula and more examples are in How it works.

An honest deal

Your pieces come from a bag shuffled from a seed. The deal reads only that seed and the game's rules version: never your board, your score or anything you buy. The same seed gives the same pieces every time, so nothing is tuned to you, and the next three pieces arrive only after all three are placed.

Stuck? The game checks

When nothing fits and no line is lit, Skyburst searches every order and every spot for the three pieces you were dealt, from the board as it was when they arrived. If they could have fit, you get a Last Stand: the same pieces again, with points doubled until all three are placed. One per run.

If lines are lit when nothing fits, they fizzle first: they clear at the one-line rate and you keep playing. If the search finishes with no way out, the run ends with a Proven dead deal stamp. The exact steps and the search limit are in How it works.

Three ways to play

Endless
Play at your own pace. Back pauses, and the run is saved when you leave.
Daily Deal
One seeded deal per date. Your first finished run is your score; practise as much as you like.
Escape puzzles
Share a board that had a way out as a short code, and dare a friend to place all three pieces.

Firework Book

Ten firsts to earn, from your first launch to a grand finale. Each one unlocks a set of firework colours that change the bursts only, never the pieces or the score.

Supporter Pack (optional)

One optional purchase through Google Play: six extra block palettes, two board skins and a thank-you card. Looks only: the deal, the score and the rules stay the same for everyone. It is never offered during a run.

Privacy in one paragraph

The app has no ads, no account, no analytics and no internet permission, so the app itself can't connect to the internet. Your records, Daily results and settings stay in the app on your phone and in your own Android backup. The one purchase and the review card go through the Google Play Store app.

Read the Skyburst privacy policy. These web pages use cookieless PostHog analytics; see Website analytics.