A free browser adventure

3rd World

Helping others gives us the strength to save the people we love.

Play free How to play

A small home. An enormous universe.

Your mother is ill, and the old oxygen machine beside her bed is running out.

On the living-room wall hangs your father's star chart, with three dark stars circled in red ink and a note: worlds that breathe? Each of those stars is a black hole, and beyond each one lies a world that might hold what she needs: an Oxygen Core.

So you walk out of the house, climb into the family's little blue car, and lift off into space. But the people on the other side don't simply hand over their treasures. To earn each core, you have to help them first.

The explorer's small wooden home in a green meadow below snow-capped mountains, with the blue family car parked on the path

Three worlds

Cross three black holes. Help three civilisations.

Every world looks and feels different, and every mission is about giving something rather than taking it.

Mission: Harvest Day

Farm World

Endless golden fields sit beneath a ring so large it fills the sky. Help the farmer Hollis bring in the glowing sun-gourds before the day is done.

Mission: Share Knowledge

Knowledge World

A luminous city floats above the clouds, its libraries locked away. Down in the shadows live children no one has taught, until you arrive.

Mission: Feed the World

Hunger World

A dry land surrounds a lake that reflects the whole universe. Gather fallen wood, mend the broken dock, fish, cook, and fill the village granary.

Hand-painted, entirely in code

A living painted world

Soft cumulus clouds, wind-blown grass, butterflies, birds and shifting light. Every sky, tree and character is generated in real time, in a warm storybook style.

A story about kindness

There are no enemies to defeat. You progress by harvesting, teaching, fishing and cooking for people who need a hand.

Cinematic space travel

Drive into space, steer between asteroids and comets, and dive through black holes that bend the light around them.

Plays in your browser

No download and no account. It runs best on a laptop or desktop, and your progress saves automatically on your device.

Explore at your own pace

Follow the glowing red diamonds when you want guidance, or wander off to find hidden details, photographs and small stories.

VR ready

On a WebXR-capable headset, an Enter VR button appears so you can stand inside the worlds yourself.

The 3rd World title screen: the game name and a nickname field over a deep-space nebula and a glowing black hole

Your journey begins at home

Choose a nickname, pick your explorer and outfit, and step into the house. Talk to your mother, check the oxygen machine, then head out to the car. Use WASD to move, the mouse to look, Space to jump and E to interact.

Play free

Frequently asked questions

Is 3rd World free to play?

Yes. 3rd World is completely free and runs in your web browser. There is nothing to download or install.

What do I need to play?

A laptop or desktop computer with a modern browser such as Chrome, Edge, Firefox or Safari, and a keyboard and mouse. The game uses WebGL for its 3D graphics, which almost every modern computer supports.

Can I play on my phone?

The game loads on phones and tablets and includes basic touch controls, but it is designed for a keyboard and mouse. For the best experience, play on a computer.

How long does the game take?

A full playthrough (home, all three worlds and the ending) takes most players around 30 to 60 minutes, depending on how much they explore.

Does the game save my progress?

Yes. Your progress is saved automatically in your browser. Come back later, enter the same explorer name, and you will continue where you left off.

Is it suitable for all ages?

Yes. 3rd World is a gentle story about kindness, family and helping others. There is no violence; the challenges are about harvesting, teaching, fishing and exploring.