Underground
Knowledge

5 stations · 1 city

Five stations. Drop a pin on each.
Fewest kilometres wins.

Mode

Hints

Map

High contrast: black streets and water on white, for easier viewing.

Your result, streak and settings are saved on this device (localStorage). Anonymous visit counts come from Cloudflare Web Analytics. If you join a league, your chosen name and scores are stored on our server. No personal data is sold.

Unofficial fan game. Not affiliated with Transport for London.

Leagues

Compete with your friends, your group, your rivals

Set up a private league in seconds. Everyone plays the same daily puzzle, and your league tracks who's best over the week.

Create your league. Give it a name and get a unique link instantly. No account needed.

Share the link. Drop it in your WhatsApp group, Discord, wherever. Anyone with the link can join.

Play and submit. After each daily game, scores submit automatically. Leaderboard updates instantly.

Check the standings. Ranked by average score, resets every Monday.

Create a league

Set up your league

League name What players will see on the leaderboard.

Your player name

Recovery email (optional but recommended)

If you lose your admin link, we can resend it. We won't use it for anything else.

League game mode

Hard: hints available. Easy: Tube map shown. Set once at creation and can't be changed. Members playing in Hard mode can't score into an Easy league, and vice versa.

Scores are averaged over days played. Minimum 3 days to appear in standings. Resets every Monday. Your league link never changes.

Your league is ready

Your league is live!

Share the player link and let the competition begin.

Player link Share this with your group

Your admin link Keep this private

Save your admin link. It's the only way to manage your league. It won't be shown again.

Both links sent to your recovery email.

Get in touch

Feedback, bugs, or suggestions?

Your message goes straight to the people who make Underground Knowledge. No email needed.

What's this about?

Your name (optional)

Your message

Message sent. Thanks for getting in touch.

My leagues

Tap any league to view its standings. Scores submit automatically after each game.

To join a new league, tap the link your group shares with you.

Your player name and scores are stored on our server for leagues only. No other personal information is collected.

Leave league?

Leave this league?

You'll stop submitting scores here. Your scores this week stay until Monday's reset.

Delete my data

Are you sure?

This permanently deletes your player profile and removes you from all leagues. Cannot be undone.

Change name

Your name will update on the leaderboard immediately.

New player name

Leaderboard

Underground
Knowledge

Round 1 of 5

Total Error: 0 km

Find this station

Loading…

HINT

Your guess Real station Distance

Underground
Knowledge

Enjoy this? Try my other map games WhÉire · Where in Britain? · Ground Finder · Local Knowledge

No station names shared, just your scores.

Your streak

Current streak

Longest streak

Total rounds

–

Personal best

Streaks are tracked on this device only and aren't shared across devices or synced to your account.

UndergroundKnowledge

Leagues

Compete with your friends, your group, your rivals

Create a league

Set up your league

Your league is ready

Your league is live!

Get in touch

Feedback, bugs, or suggestions?

My leagues

Leave league?

Leave this league?

Delete my data

Are you sure?

Change name

Leaderboard

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Your streak

Underground
Knowledge