Last Bubble Rise

Bubbles rise. Merge two small ones into a medium. Two mediums into a large. But merge two larges and they burst into four. Don't let any escape.

Last Bubble gives you one rule and asks you to survive it.

Bubbles rise from the bottom of the screen. They float upward at different speeds depending on their size — small ones rise fast, large ones rise slow. Tap two bubbles of the same size and they merge into a single larger bubble, which rises more slowly and buys you time.

Except when it doesn't.

Two small bubbles merge into a medium. Two mediums merge into a large. Two larges merge into a burst — four small bubbles scattering outward from the point of impact, each one rising fast, each one needing to be managed all over again. A single wrong merge at the wrong moment turns a controlled situation into four simultaneous problems.

There is a cooldown. A newly merged bubble cannot be merged again for two seconds — you can see it counting down as a light sweeping around its edge. Burst bubbles are immune for one second after scattering, rising toward the top while you wait, unable to do anything. These two constraints together mean you cannot simply tap everything as fast as possible. You must sequence. You must plan. You must decide which merge to make first, knowing the result will be temporarily off limits.

The bubbles spawn faster the longer you survive. The longer you survive, the faster they rise. At some point the screen fills and a merge cascade becomes inevitable. The question is not whether it happens but how long you hold it together before it does.

Last Bubble does not have levels. It does not have power-ups. It does not have lives. It has bubbles, and they are rising, and one of them is about to escape.

No ads. No timers between runs. Just the bubbles and the gap between where they are and where they must not go.