Green hills, two stations, and a steam train you can actually ride.
Worlds Lab. The train runs the valley loop forever — board it at either station, hop off anywhere. This is a lab world — a real, walkable build running solo (no shared presence yet). Everything you see is exactly what exists. Built in the open at heartbeatobservatory.com.
Move WASD or arrows · Look mouse · Sprint Shift · Jump Space · Use E
Move left pad · Look drag the screen · Use green ENTER button