Hostile Freedom mod for Half-Life 2

In the future, all criminals go to Hammerstein, a prison built on a planet far from Earth. The smallest crime will land you a new home on this prison of nine million. Bounty hunters, assassins, scientists, ex-military, engineers, are but a few of the types of criminals Hammerstein contains. The prison was once successful. The criminals went on with their new life; fighting, searching and building. But when one convict-dropship was ambushed by a group of technologically advanced convicts, the whole prison turned chaotic. Everyone ran rampant, brutally killing the Hammerguards with their newly acquired weapons which were made by underground organizations. As time progessed, the entire prison became one big criminal operation. All the resources found on the planet helped the criminals forge a new world; a lawless world.

In a desperate attempt for military action, the Solid Arm ordered the Opanara Marine Corporation, Earth's specialized armada, to take Hammerstein back at all costs. This planet could no longer be operated by criminally-insane minds. If they found out the coordinates to Earth, nine million men and women with grudges and no tolerance for the law, would come back and reign over the innocent. This must not happen. An epic battle would soon begin.