How it works.

Each city edition is a board of numbered stations linked by real transport. Every station has a real street photo, and when you stand on one you see it. Each move goes from your station to a neighbouring one along a link, and costs a ticket of that link's type.

Your team

You lead 4 AI teammates in London, and 1 to 3 in Bengaluru depending on the area's size. Every detective has its own colour and number; yours is labelled YOU. Everyone starts spread across the board. Detectives move in number order after the Ghost, and your teammates spread out to cover every place the Ghost could be.

Orders and jumping in

Tap a teammate (on the map or under Team orders) to tell it to let the AI decide, stick with you, or go to a station you pick, which it then guards. You can also jump into its place: you play as that detective from then on, and the one you left carries on with the AI.

The tracker

Optional. Switch it on to see a violet glow on every station the Ghost could be at, worked out from its tickets, your team's positions and the sightings you've pinned. The fewer places, the brighter the glow.

Your tickets

10 taxi (auto in Bengaluru), 8 bus and 4 Underground (metro). When a ticket type runs out you can't use that transport. If you can't move at all, you sit the round out.

One per station

Two detectives can never stand on the same station.

The Ghost's trail

The Ghost moves before you every round. You always see which ticket it used (taxi, bus or Underground) unless it plays a secret ticket. A double move shows as two tickets in one round.

Sightings

On rounds 3, 6, 9, 12 and 16 you get a street photo of exactly where the Ghost is standing. Pin it on the map to score; then its station is marked with a red camera.

Winning

Catch the Ghost by landing on its station: you or any teammate. If it is still free after round 16, it escapes.

The chase

You start on a secret station; 4 AI detectives in London (1 to 3 in Bengaluru) start elsewhere. Every round you move first, then they do. Survive 16 rounds to escape.

Your tickets

4 taxi, 3 bus, 3 Underground, 3 secret and 1 double move. Every ticket a detective spends is handed to you, so you rarely run dry.

What they know

They see the ticket type of each move, never the station. On sighting rounds (3, 6, 9, 12 and 16) they get a photo of exactly where you are.

Secret ticket

Use it on any link to hide which transport you took. It's the only way onto the river boats.

Double move

Two moves back-to-back before the detectives react. Both fill a round in the log.

Getting caught

A detective lands on your station, or you have no legal move left (you can't move onto a detective).

Your clone

Every choice you make trains an AI that plays like you. When the run ends it goes live with your username, and anyone can hunt it. Sync shows how often it would make your moves; more runs, sharper clone.

Catch bonus

3,000 points for a catch, plus 150 for every round to spare. Catching it in round 6 is worth 4,500.

Photo pins

Up to 1,000 points per sighting: 779 at 100 m off, 368 at 400 m, 82 at 1 km.

Leaderboard

Your total across every hunt ranks you among all detectives. The quickest catches get their own board.

The Ghost's position never leaves the server until the game ends. Sighting photos are a different shot from the station's street view, framed in a random direction, with no location data attached. Faces and number plates are blurred by Mapillary.