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A floating garden island, half built, waiting for its last pieces

A 3D building puzzle, against the clock

Build the Impossible

Snap floating pieces into place, get the water flowing and wake a dead island up. Then find out where you rank.

Play Pick a world
  • 3D puzzle
  • 25 levels, 5 worlds
  • Global rank
How it plays

How it plays

Three moves. The rest is you.

  1. Drop it on the glow

    Drag a piece from the tray onto a glowing socket. Get close and it snaps.

  2. Turn it till it fits

    Tap a piece to turn it. Line its openings up with its neighbours.

  3. Wake the world

    Get water to every fountain and the whole island comes alive. The clock stops on your last move.

Five worlds

Each world stranger than the last.

Every world starts where the last one got hard, then adds a trick of its own.

  1. World 1

    The Floating Islands

    Twilight islands and glowing water. Where you learn to build.

    Placingturningbranching

    Start here

  2. World 2

    The Lost City

    Golden ruins under a jungle canopy, and machinery that still turns.

    Turntablesportals

    Opens after The Floating Islands

  3. World 3

    The Sky Realms

    Cloud castles at dawn, where up and down stop agreeing.

    Risersillusionsgravity flip

    Opens after The Lost City

  4. World 4

    The Labyrinth

    A moonlit maze of hedge and stone that gives way under you.

    Crumbling socketslong paths

    Opens after The Sky Realms

  5. World 5

    The Impossible

    Escher in a cosmic void. Water, light, and nowhere to hide.

    Water and lighteverything at once

    Opens after The Labyrinth

Compete

Your time. Everyone's rank.

  • The daily build

    One puzzle for everyone today. Same pieces, same clock.

    Players today
    —
    Median time
    —

  • Challenge a friend

    Send a link. They get your exact puzzle and your time to beat.

  • A rank on every level

    Every finish is checked by the server, then ranked against the world.

Example

You built it.

#3,248in the world

Faster than 98% of players

Time
1:42.3
Accuracy
Perfect

Architect

Questions

Before you ask

What is Build the Impossible?

A 3D puzzle against the clock. Each level is a broken floating island: drag the pieces onto the glowing sockets, turn them until the channels line up, and the water runs again. Fast and clean beats slow and messy.

Is it free? Do I have to install anything or sign up?

Free, and it runs in your browser. Nothing to install, no account, no email. Your progress stays on your own device.

How does the global rank work?

When you finish, your moves go to our server, which replays them and times the run itself. Whatever your browser claims is ignored. Your time, plus 1.5 seconds per wasted move and 5 per hint, is compared with every verified finish on that level. Practice runs don't count.

Is there a daily puzzle?

Yes. Every day, each level deals everyone the same pieces in the same order, so today's times are a straight race. A fresh deal lands at midnight UTC.

Does it work on a phone?

It was built for one. Drag with a finger, tap to turn. On a computer the mouse does the same job. Any recent browser will run it.

How many levels are there?

25 levels in 5 worlds. Each world adds a new trick — portals, gravity flips, crumbling sockets — and opens once you clear the one before it.

The first island is waiting.

Learning it takes a minute. Getting fast takes longer.

Play