3D Realms announces the development of Duke Nukem Forever.
Duke Nukem Forever experiences its first major delays due to changes in technology and game design directions.
Development team switches to Unreal Engine 2.5 in an attempt to update the game's graphics and technology.
Duke Nukem returns from his vacation and prepares to confront the alien threat.
Duke fights the Cycloid forces through the city streets, battling alien enemies and rescuing civilians.
Duke infiltrates the alien mothership to sabotage the alien invasion plans.
Duke rescues kidnapped women known as the Bombshells who are prisoners of the aliens.
Duke confronts and battles the Cycloid leader to stop the alien invasion once and for all.
Duke Nukem defeats the alien forces, liberating Earth from invasion and restoring peace.
