2007 · Shooter · PC (Microsoft Windows) · Mac
Prison Takes place on a Large Underground Prison Facility, Located on Siberia. In a Distress, Under This System is a Prison Dungeons Alien Hive and Once the Aliens come From Xena. Gordon Freeman travels to the Destroyed Prison Overuned by Aliens and Travels to the Prison Dungeons Alien Hive, Where he Faces A Large Population of Aliens and Attempt to stop an Unknown Being that is Creating a Chaos.