What the official premise establishes
RADIOSOL’s official description presents a world left behind after a planetary catastrophe. Its protagonist is sensitive to radio signals, yet human voices are absent. Ruined cities and immense concrete structures form the setting. These details introduce the mystery; they do not answer what caused the catastrophe or identify every voice and character.
First route and the closed metro
Capn’ Cattlehammer’s community walkthrough starts by leaving the opening hole and following the pipeline toward the city. Look for the blue M to find the metro after receiving N3’s instructions. The closed door is a progression checkpoint: the guide next seeks access to the Sphere through the unfinished Agglomeration 5 building across from it. The old railway is the author’s shaded navigation aid.
An alternative near the beginning
Capn’ Cattlehammer also reports a level-two key and lore in a hole near the beginning. Its precise opening is shown in an image rather than identified clearly in the text used here. This is an alternative search lead, not a verified coordinate or a step-by-step route to that hole.
Find Horizon from Radio 0
Capn’ Cattlehammer places the crashed NEP command ship Horizon in the desert northeast of the Radio 0 tower. The reported rewards are lore and a binocular upgrade that adds waypoints for major locations. Use Radio 0 as the starting landmark; the account does not give world coordinates for the wreck.
Sources
Sources checked October 3, 2026. Player reports remain attributed; this site has not performed the gameplay tests.