Coming soon for iPhone and iPad

Your next interchange starts here.

Explore intricate layouts. Draw roads, connect ramps and see your own design in 3D.

Explore the roads Coming soon to the App Store
Native 3D view of a layered road interchange in the appEXPLORE CITY INTERCHANGES
01 / Interchange atlasEXPLORE IN 3D
3Dinterchanges to explore
3–8approaches per interchange
Offlineexplore and build
01 / EXPLORE & CREATE

Understand it.
Then build it.

Follow a ramp through a tangled junction. Find the idea that makes it work. Then try a connection of your own.

Native 3D view of a layered road interchange in the app
01 / Interchange atlasEXPLORE IN 3D

Discover how roads connect.

From compact 3-way layouts to intricate 8-way interchanges. Rotate the roads, zoom into the ramps and see how each layer fits.

Look beneath the surface →
02 / FROM SKETCH TO STRUCTURE

One road.
A new possibility.

  1. 01

    Draw the main roads

    Choose two points to place a road. Set its height before you build the next layer.

  2. 02

    Join them with ramps

    Pick the roads you want to connect and preview the route between them.

  3. 03

    Find the right curve

    Adjust the bend and direction. Undo and redo to try a different connection.

  4. 04

    Step inside your design

    Open the 3D view. Rotate, zoom and look from above to see the whole structure.

Road editor showing main roads, connecting ramps and editing controls
02 / YOUR CURRENT DESIGNEXPLORE IN 3D
03 / FOLLOW THE FLOW

A road is more
than a line.

Watch vehicles move through the included interchanges. Follow a turning lane, a rising ramp, a crossing you almost missed.

Traffic is available on included interchanges. Your own designs are currently for 3D viewing.

Vehicles moving along the lanes of an included 3D interchange
04 / CHANGE YOUR PERSPECTIVE

Every layer tells
part of the story.

Top-down view revealing the overlapping levels of a road interchange
04 / See what the plan hides.EXPLORE IN 3D

See what the plan hides.

Turn the view, look from above or exaggerate height to make overlapping roads easier to follow.

App catalog showing the collection of interchange layouts
05 / Find your next starting point.EXPLORE IN 3D

Find your next starting point.

Browse the included layouts and compare how different junctions connect their approaches.

05 / BEFORE YOU START

A few useful
answers.

Is this a full city-building game?

The focus is roads and interchanges: exploring the included collection and creating your own road connections. There is no city economy, railway network or full-city simulation.

Can I test a real road project with it?

Use it to learn, explore and create. The visual models and traffic are not engineering checks, validated traffic forecasts, construction plans or navigation guidance.

Will cars drive on the roads I draw?

Not currently. Traffic is shown on the included interchanges. Your own designs can be viewed in 3D.

Can I save more than one design?

You can save your current design on your device and continue it later. There is no multi-project library or cloud sync at present.

Does it work offline?

Yes. The interchange collection and road builder work on your device without an account or an Internet connection.

Is the app available yet?

The iPhone and iPad release is being prepared. The App Store link will be enabled here once the app is available.

YOUR NEXT CONNECTION

Explore the roads.
Imagine your own.

Coming soon to the App Store

Explore the roads

This selector changes the introduction only. Full site and legal pages are available in English and Chinese.