Interchange.Daily transport & geography games

COMING SOON TO THE APP STORE

Daily puzzles for
transport &
geography enthusiasts.

67 daily games about train journeys, airports, aircraft and places. Coming soon.

Game network

Your games on the London Underground network. Select a station to explore.

Grey station names mark modes in development.

Swipe to explore the network.

Signal — Read a moving network. In development.SignalMap Match — Match the real and drawn line. In development.Map MatchTopology — Find the possible network. In development.TopologyJunction — Find the connecting station. In development.JunctionTerminus — Follow a service to its end. In development.TerminusStop Order — Put stations in order. In development.Stop OrderLast Call — Catch the final service. In development.Last CallDetour — Route around a closure. In development.DetourReach — See what is reachable. In development.ReachChain — Link a valid journey. In development.ChainShortcut — Spot the faster route. In development.ShortcutWayfinder — Visit three places in time. In development.WayfinderHeadway — Rank service frequency. In development.HeadwayRush — Read a demand estimate. In development.RushNight Shift — Find the night services. In development.Night ShiftThe Gap — Spot the missing link. In development.The GapHub — Find the best-connected stop. In development.HubNetwork Grid — Fill a station logic grid. In development.Network GridOdd Track — Find the rule breaker. In development.Odd TrackLineage — Order network history. In development.LineageFaultline — Repair a broken network. In development.FaultlineDraft — Draw a useful new link. In development.DraftCapacity — Place limited upgrades. In development.CapacityAirfield — Recognise a runway layout. In development.AirfieldRunway — Choose a landing heading. In development.RunwayArc — Read a great-circle path. In development.ArcRange — Mark reachable airports. In development.RangeDiversion — Choose a suitable alternate. In development.DiversionStrait — Find a sea passage. In development.StraitPort Call — Place a port on the coast. In development.Port CallSeaway — Plan an ocean passage. In development.SeawayIsland Hop — Join ferry departures. In development.Island HopHarbour — Match vessel and port. In development.HarbourCity DNA — Recognise a city's shape. In development.City DNAWatershed — Follow a river to sea. In development.WatershedTerrain Line — Find a feasible crossing. In development.Terrain LineTime Shift — Arrive in another time zone. In development.Time ShiftInterchangeTransferEscapeThrough TrainTraceScaleVectorCarriersGateFleetLayoverSkywayOutrankTailfinBustCheckpointStrayRoll CallMisplacedCity GridBorderpathFoldRadiusWindow SeatLayersHeadcountPostcard

Key to lines

BakerlooCentralCircleDistrictHammersmith & CityJubileeMetropolitanNorthernPiccadillyVictoriaWaterloo & City
Current game · select to exploreInterchange / homeIn development

Line geometry adapted from the TfL Tube map. © Transport for London. Game station names added by Interchange.

Game screenshots

Explore the current games. Select a screenshot to open the full gallery.

12 games

Transfer

Transit

Plan a train journey across Europe. Pick connections that fit the time limit, and complete the daily challenges along the way.

Escape

Transit

Start in the daily departure city and travel as far as you can before your time runs out. Choose connections carefully and follow any route restrictions.

Through Train

Transit

Identify a train route from the departure board and map clues. Work out the origin and destination, then submit your pair of stations.

Trace

Transit

Identify a city from the shape of one of its transit lines. Use the station count, journey time and interchanges to narrow down your guesses.

Scale

Aviation

Resize the silhouette until it matches the true scale of the reference object. Lock in your estimate and see how close you came.

Vector

Aviation

Follow a flight and estimate where it is on the map. Place your pin, lock in your guess and score points for accuracy.

Carriers

Aviation

Identify an airport from the airlines serving it. Use the carrier clues and the feedback from each guess to find the right airport.

Gate

Aviation

Identify an airport from its destinations. Read the route clues, make a guess and use the feedback to narrow it down.

Fleet

Aviation

Identify an aircraft from the operators that fly it. Make your guess and use the aircraft facts to work towards the answer.

Layover

Aviation

Build a flight itinerary between the daily airports. Choose flights and connections that get you there within the budget and time limit.

Outrank

Geography

Compare two places and decide which has the larger population or elevation. Keep your streak going for as long as you can.

Skyway

Aviation

Identify both ends of a flight route. Use the daily clues to work out the departure and arrival airports.

Beta reviews

BETA
TESTING
“Transfer gives me an excuse to plan a train journey even when I’m staying at home.”
Rail enthusiastSample beta feedback
“I’d keep coming back to Gate. Recognising an airport from its routes is exactly my kind of puzzle.”
Aviation enthusiastSample beta feedback
“The maps make these games feel different. I like working something out, rather than just recalling a fact.”
Geography teacherSample beta feedback

Roadmap

What’s here, and what’s next. Release dates will be shared when confirmed.

  1. 1
    CURRENT BUILD

    Aviation & transit games

    Playable previews of rail journeys, airports, aircraft and flight routes.

    Available to preview
  2. 2
    BEFORE LAUNCH

    Testing & refinement

    Review game content, improve the mobile experience and work through beta feedback.

    In development
  3. 3
    COMING SOON

    App Store release

    Launch Interchange on iPhone and iPad.

    Planned
  4. 4
    AFTER LAUNCH

    More games & geography

    Expand the collection with more places, puzzle formats and game modes.

    Planned

Frequently asked questions

01What is Interchange?

A collection of daily puzzle games about transport and geography. Plan journeys, identify places, airports and aircraft, and work out routes.

02Which games can I see here?

The gallery shows aviation, transit and geography games: Transfer, Escape, Through Train, Trace, Scale, Vector, Carriers, Gate, Fleet, Layover, Skyway and Outrank. The central Interchange station opens the home screen. More games are in development.

03When will the app launch?

Interchange is coming soon to the App Store. There is no confirmed release date yet. Join the waitlist for a launch notification.

04Which devices will be supported?

The upcoming App Store release is being developed for iPhone and iPad. Other platforms have not been announced.

05Are these real screenshots?

Yes. These are screenshots from the current Interchange build. The design and content may change before release.

06Do I need transport knowledge to play?

You can start by exploring the routes and clues. Some puzzles will feel familiar to transport enthusiasts; others are a chance to learn something new.

07Does joining the waitlist give me beta access?

The waitlist is for launch notifications. Beta access is separate and is not guaranteed by signing up.

08How will my email be used?

Your email is saved for Interchange launch notifications. It is not displayed publicly, and joining does not create an account.

INTERCHANGE / WAITLIST

Next stop:
the App Store.

Leave your email and we’ll let you know when Interchange is available on the App Store.

How we use your email

Your email is saved for Interchange launch notifications. It is not displayed publicly or shared with other visitors. Joining does not create an account.

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