GOD was a government-funded organization that researched and developed tactical weapons. They were responsible for Undead Soldier (U.D.S.), a project that created artificial "recyclable" zombie soldiers. U.D.S. was later used by the bioterrorist ZED to mastermind a zombie outbreak in Woodside City. GOD is the catalyst of the events depicted in the 1999 House of the Dead spin-off Zombie Revenge.