The first visit downloads the engine (about 1 MB); after that it comes from your phone's cache.
WORLD 2 · city—solo
World 2
The second world of Heartbeat Observatory.
Being built in the open. A downtown on a river: real streets with sidewalks, crosswalks, lamps, signals and traffic, storefronts and the courthouse green. Doors with a green mat are real: the Grand Palace, the Arcade and the Library open into their halls; Social Hall, Projects, WHB News and Union Station (trains to Town Square and Ashgrove) carry you to the rest of the Observatory. Eight open lots wait for residents — claim one with a GitHub repo and it becomes your building. Shops, jobs and the news studio come in later builds. Multiplayer is live.
Walk click the street, or WASD · Look drag · Sprint Shift · Map M · Enter a door E
Walk tap where you want to go, or the left pad · Look drag · Map tap the little map
Tap the map, or a place below, and you walk there.
Claim this plot
Paste a GitHub repository link. The plot becomes that project's building, with a Project Hall of its own — automatically, forever, tied to your account.