Signal Tower

You have one aerial on a tenement roof in Corvane, a rack of cheap equipment and a night that starts at eight. People who cannot sleep tune in. Their small change buys antenna power, phone lines and relays, and a relay is a line you drag across the map from your roof to someone else's.

Nine districts keep their own hours. Students want records until one, the hospital changes shift at eleven and five, the port wakes at three for the tide. You set a grid of talk, music, news and drama by the hour, and a district that hears what it wants calls in four times as often. Those calls bring letters, fourteen of them, each from one district during one program, and somewhere past the tenth you learn who has been passing your signal along.

Every roof ends with the detection meter full. Go dark and keep the gear, move to the next roof with the listeners who follow you, or talk straight through the raid on a coin flip. Rooftop bonuses and forty two city records keep the long game going. The station runs quietly while you are away until someone finds it. Browser or Windows, saves locally, free to play.

Controls: mouse only. Click a district for its night curve, drag a line from a district you reach to another to string a relay, and use the right panel tabs for upgrades, the schedule grid, letters and stats. Esc opens the menu.

Disclosure: the code and the letters were written with an AI coding agent under human direction. The map, the art and every sound are generated by scripts, with no image or audio assets.