It is 1925. You own a wooden shack at the edge of a forest and an 8-metre radio mast. Turn it into the network that carries the first live broadcast from Mars.

Signal Tower is an idle telecom game that takes you through a century of signal:
• Radio Relay – sign taxi dispatchers, ferries and harbour masters as clients
• Broadcast Radio – win listeners and sell advertising airtime
• Television – raise a 314 m concrete TV tower and bring the capital into your picture
• Mobile – build cell sites across the map, add sectors where cells fill up
• Mobile Data – upgrade to 3G and 4G, dig fibre, build a data centre
• 5G & Smart City – small cells, smart meters, a smart port and self-driving cars
• Satellites – launch rockets, park satellites over every region, cover the planet from low orbit
• Deep Space – link the Moon, Mars, the asteroid mines, Europa, Titan and a probe to the stars

SIGNAL THAT MAKES SENSE
The radio horizon depends on how tall your mast is, the reach on your transmitter power – and every watt needs a big enough grid connection, which comes with a standing capacity fee. Weather matters too: storms knock antennas out, snow ices up the mast, summer nights stay light.

SELL, MERGE, START AGAIN
Two prestige layers: sell your frequencies at the Spectrum Auction for licenses, or merge into a global consortium for Orbital Slots that make every next run faster.

RELAXING TO WATCH
Night Watch mode dims everything but your tower – a calm, burn-in-safe view to leave running. Morse, radio static, modems, thunder and rocket launches are synthesised live by the game.

GOOGLE PLAY GAMES
94 in-game achievements (30 of them on Google Play), three leaderboards and cloud save, so your progress follows you to a new phone.

FAIR TO PLAY
The whole game, all eight eras and the ending, can be played for free. Only one-time purchases – no subscriptions, no loot boxes, no fake waiting timers. Optional boosts come from rewarded ads you choose to watch.

Feedback and ideas: signaltower@mametec.ee