A Penal World is a class of Imperial world used entirely as a military-prison planet. A single such world's population consists of criminals from hundreds of different worlds. They tend to be barren worlds that have few other uses. Military formations are then raised from among the population as necessary, to serve as Penal Legion troops within Imperial Guard regiments. There they may earn redemption through their term of service, which is for life.
Penal Worlds are barren and have little, if any, native population. There are also comparable worlds used as penal colonies.
Notable Penal Worlds
|Phaenon Prime (former)||Segmentum Obscurus||None, former Imperium, former Chaos||None||Destroyed. Also former Hive World|
|Phyrr||Segmentum Obscurus||Imperium||Unknown||Also — Death World|
|St. Josmane's Hope (former)||Segmentum Obscurus||Imperium||Unknown||Now - destroyed|
|Zeta-Garmon X||Segmentum Solar||Imperium||Unknown|
|General||Dead World • Death World • Desert World • Ice World • Jungle World • Ocean World|
|Imperium||Adeptus Astartes Homeworld • Agri World • Cardinal World • Cemetery World • Civilised World • Feral World • Feudal World • Frontier World • Forest World • Forge World • Fortress World • Hive World • Industrial World • Knight World • Mining World • Paradise World • Penal World • Quarantined World • Quarry World • Repository World • Research Station • Sentinel World • Shrine World • Swamp World • War World • Hub-Fortress|
|Chaos||Daemon World • Hell Forge • Fallen Knight World|
|Xeno||Xenos World • Exodite World • Tomb World • Maiden World • Crone World • Ork World • Tau Sept • Craftworld|