DOUBLE IT
Play

Official game site

A liquid number-merge game

DOUBLE IT

Merge glowing numbers. Chain combos. Bend the board with the constants of mathematics.

PLAY NOW

Coming soon to Google Play

Four ways to play

  • Classic

    The heart of the game. Operators such as plus, minus and T travel around the ring, turning each merge into a deeper reaction chain.

  • Zen

    Pure, calm merging with no clock and no failure. If the ring overflows, a black hole comes to the rescue. It unlocks after your first Classic run.

  • Time Attack

    A survival race against the clock. Every merge buys you time; every combo buys you more.

  • Eclipse

    The endgame. Forge ultimate powers and face the board at its darkest. Eclipse asks for everything you have learned.

In game

Captured in the live web version of the game.

Classic mode: number bubbles around the ring while a golden + operator waits in the core, ready to merge the equal pairs around it.
Operators ride the ring — a + in the core merges every equal pair around it.
A Great Chain ×3 banner glowing above the board as merged bubbles light up.
Chain merges without pause and the whole board starts to sing.
The Choose Your Power screen: the five liquid constants φ, π, e, Σ and ∞ orbiting the core during a hyperspace warp.
A full gauge summons the five constants. Pick one and bend the board.
Zen mode: a calm ring of softly glowing number bubbles drifting in deep space.
No clock, no failure — just liquid numbers drifting in deep space.

How to play

  1. Two bubbles carrying the number 2 fusing into a single liquid blob on the ring.

    Merge bubbles carrying the same number. They fuse into one bubble and the value doubles.

  2. A Great Chain ×3 banner appearing above the board during a combo.

    Keep merging without pause to chain combos and fill your power gauge.

  3. The five power constants φ, π, e, Σ and ∞ presented around the core, waiting to be chosen.

    When the gauge is full, choose φ, π, e, Σ or ∞ and reshape the ring.

The soundtrack

DOUBLE IT plays over an original ambient score: a slow spacescape written in F♯ minor. Every chime and merge tone is tuned to the same scale, so the sounds you make while playing always land in key with the music.

Original ambient score

F♯ minor spacescape

0:00 6:09

About the developer

DOUBLE IT is designed, built and composed by a single developer at B-Smart, an independent studio based in Canada. It is part of a small family of handmade software. Find the rest at b-smart.xyz.

Questions

Is DOUBLE IT free?

Yes. The game is free to play, with optional rewarded ads on some platforms. Watching one is always your choice.

Can I play offline?

The Android app plays offline. The web version needs a connection to load.

What languages are supported?

English and French. The game and this site both follow your choice and remember it.

Where is my save?

On your device. Your progress is stored locally and never leaves it.

How do I report a bug?

From inside the game, open Settings → Support.