| ||For an overview of radroachs in the Fallout series of games, see radroach.|
|The following is based on Fallout Shelter and some details might contradict canon.|
These pesky critters are hard to get rid of. Take them out before they spread.”— In-game description, under help.
Radroaches, also known as Great American cockroaches or giant cockroaches, are giant versions of the pre-War species that have been mutated by radiation.
Radroaches are the weakest enemy in the game, and can be encountered both while exploring the wasteland and during incidents. While they are not very strong on their own during incidents they attack in numbers, and can cause trouble for ill prepared Vault dwellers.
Radroaches can also be encountered during quests. Their boss variant is stronger, tougher and constantly deals radiation damage due to their glowing appearance.