The real city
Streets, buildings, trees, parks and rivers are where they are in Brno, as far as you can see. Roads have their real width, and street lamps stand along them.
Walk, fly and drive through Brno and the land around it, rebuilt in blocks from open map data. It runs in your browser, on a computer or a phone.
No download, no account.
Everything below is in the game now. The keys are for a computer; on a phone the same things have buttons.
Streets, buildings, trees, parks and rivers are where they are in Brno, as far as you can see. Roads have their real width, and street lamps stand along them.
Walk, run with Shift, jump with Space, or fly with F. Doors are open: walk into buildings through them.
A blocky body 2 m tall with your name over it. Switch between first and third person with T.
Press M or the Map button to see where you are and what has been built. Click a place to go there. The link always holds your position, so you can send someone a place.
Press P for a plane. Take off from a road or the airport, fly over the city and land again. In the air you see 5 to 10 km, the far land drawn in less detail and fading into haze.
Press V for a car on the nearest road. It has suspension, steering and a handbrake; drive from behind it or from the driver's seat.
The sun stands where it stands now over Brno. Sunsets colour the sky, windows light up, lamps glow, and the stars and moon come out. The Time panel lets you pick an hour or run time 60 or 1000 times faster.

Open the same address on a phone or tablet. There is nothing to install.
Being worked on, roughly in this order. Nothing here is in the game yet.
See other players walking around, their dots on the map, text chat, voice that you hear when you are close, and invites to ride along in your car or plane.
Break and place blocks, dig into the ground, build your own things on top of the real city.
Pick any place on the map and have it built for you then and there, not only the Brno region.
The Brno region in the Czech Republic: a square of about 59 by 59 km around the city. The world map shows the area in blue. More places will follow.
Yes. There is no payment and no account. A way to support the project with a donation is planned (soon).
From open data: buildings, roads, trees and land use from OpenStreetMap and the Overture Maps Foundation, ground heights from open elevation models, and land cover from ESA WorldCover. The program Arnis turns that data into blocks. Mistakes in the map show up as mistakes in the world.
A recent browser with WebGL 2: Chrome, Edge, Firefox or Safari, on a computer, phone or tablet. A computer with a mouse and keyboard gives the most control.
Yes. The address in the game holds your position (and the time of day if you changed it). Copy it and send it; whoever opens it starts where you are.