FREE · PLAYS IN YOUR BROWSER
All of human knowledge.
One world to explore.
Sail your palace ship to any of 1,900+ fields, from classical mechanics to epistemology. Land, and climb the towers of its great ideas: one concept to a storey, its guardian's questions opening the way up.
Plays in your browserNo downloadNo account needed
HOW IT PLAYS
Fly, land, explore.
Learn without noticing.
All pictures on this page are from the game itself.
01Take the helm.
Sit on the throne of your palace ship and the astrolabe rises: the Tree of Knowledge, every subject a galaxy, from Philosophy and Mathematics to Law and Engineering. Open a galaxy into its solar systems, choose a planet and set course.
02Land on a subject.
Each planet is a field, like Classical Mechanics or Geology. Your palace lands in its harbour; the Planet Guide's briefing opens the city gate. Inside, the field's big ideas stand as towers: the longer an idea held sway, the taller its tower.
03Climb the tower.
Each storey is one concept: read it, then answer its guardian's questions to open the stair. Gold markers always show the way to your next step. Master every storey and the tower's keeper gives up the crown and the throne at the top.
04Collect art that changed the world.
Your Nousdex holds more than 400 landmark works, from the ice-age Lion Man to Bosch and Turner. Meet them in the cities and towers, learn their stories, collect them and set them on the pedestals and walls of the museum aboard your ship.
THE CITIES
Every subject
is a city.
Land and walk through a triumphal arch, down an avenue of sculpture, over a bridge and up an acropolis. The subject's great ideas stand in its streets as towers, each in its own court, among arcades, gardens and townsfolk, inside a walled city.
Towers by era. Ancient, medieval, early modern and modern ideas each build in their own style.
The founding tower crowns the acropolis: start there, then walk the streets through time.
Your progress in stone. Every storey you master lights up; a completed tower turns its banners gold.
GAMEPLAY TRAILER
One voyage,
from throne to tower.
Choose a planet on the astrolabe, warp across the galaxy, land in its city and climb a tower of ideas. Everything here is recorded in the game.
WHY PLAYERS STAY
A game first.
You learn along the way.
You choose where to go.
No fixed syllabus and no streaks to protect. Follow whatever you're curious about today, from black holes to ancient philosophy.
Real ideas, not trivia.
Questions check that you understand, not that you memorised. Why does a satellite in a steady orbit still need a force? You'll find out.
Nothing to install.
It runs in your web browser on a computer, tablet or phone. Click play and you're on the bridge of your ship.
Before you board
Is it really free?
Yes. Nousfarer is free to play in your browser.
Do I need an account?
No. You can start playing straight away. Sign in to keep your progress on every device, and so a tower can write the lessons and questions it does not have yet while you climb.
What do I need to play?
An up-to-date web browser. It plays best on a computer with a keyboard. Phones and tablets get touch controls.
Who writes the lessons and questions?
They are drafted by AI and improved by people. How we use AI
YOUR SHIP IS READY
Where will you
land first?
You don't need to know where to begin. Take the helm and pick a galaxy.
Plays in your browserNo downloadNo account needed