Radio Tags are collectibles seen in Red Faction: Guerrilla. They tell some backstory of the game and the games before. There are a total of 36 collectible Radio Tags. They can be easily identified with an orange glow over them and a skeleton. They can be seen on the minimap with a green dot that appears every time the radar scans the area twice. Some of them are quite humorous while most are depressing. If you collect every Radio Tag you get the achievement/trophy "Lost Memories". Some of the tags are story lines from Red Factions 1 and 2.
Everytime you collect a certain amount of Radio Tags the map will update with the location of a M.O.A.B..
Drive over the marker on your map and turn your vehicle into a driveable bomb that will blow up when the vehicle is destroyed.