Unreal is a first-person shooter computer game developed by Epic Games and Digital Extremes and published by GT Interactive (now owned by Atari) in 1998. It was powered by an original gameplay and computer engine that now bears the game's name, one that had been in development for over three years in founder Tim Sweeney's garage before the game was released.

Since the release of Unreal, the franchise has had one sequel and two different series based on the Unreal universe. One official bonus pack, the Fusion Map Pack released by Epic Games, can be downloaded from the internet for free.

Unreal Mission Pack I: Return to Na Pali was released on May 31, 1999, and added new missions to the single player campaign of Unreal. Unreal and Unreal Mission Pack I: Return to Na Pali would later be bundled together as Unreal Gold. Additionally, the games were updated to run on the Unreal Tournament version of the game engine.

Plot

The player takes on the part of Prisoner 849, an otherwise anonymous persona aboard the prison spacecraft Vortex Rikers. The ship crash-lands on the lip of a canyon on the planet Na Pali, home of the Nali, a primitive tribal race of four-armed humanoids. The Nali and their planet have been subjugated by the Skaarj, a race of brutish yet technologically advanced reptilian humanoids. Skaarj troops board the downed Vortex Rikers and kill the remaining survivors, save for Prisoner 849, who manages to arm himself/herself and escape from the ship.

The planet Na Pali is rich in "Tarydium", an exotic crystal that possesses a high energy yield, whose utility is the reason for which the Skaarj have invaded. The ship has crashed near one of the many Tarydium mines and processing facilities that the Skaarj have built. Prisoner 849 travels through the mines, meeting Nali slaves and eventually entering the ruins of Nali villages and cities, where the extent of the Nali's suffering and exploitation are made clear.

Throughout the game the player stumbles across the remains of other humans, often with electronic journals that detail their last days and hint at the cause of their demise. Usually the tales are of desperate struggles to hide from the Skaarj or other bloodthirsty inhabitants of the planet.

Prisoner 849 continues to make his way through a series of alien installations, crashed spaceships, and ancient Nali temples infested with Skaarj troops and their minions, eventually arriving at the Nali Castle. Inside the castle, the prisoner locates a teleporter that leads to the Skaarj Mothership. The mothership proves to be a vast labyrinth, but Prisoner 849 manages to find the ship's reactor and destroys it, plunging the vessel into darkness. After navigating the corridors in the dark, the player arrives at the Skaarj Queen's chamber and kills her. Prisoner 849 jumps into an escape pod as the mothership disintegrates. Although the prisoner survives the Skaarj, the escape pod is left to float into space, with slim hopes of being found.