Forgotten is a Map pack created by Andrew "Sinistral" Allison for the original Unreal. It utilises some of the features of the unofficial Unreal 227 patch...
Ever since the humans discovered NaPali they have maintained a military and scientific presence on the planet. As one of the very few Earth-like planets in the known universe Napali could potentially be the solution to all of earths resource and population problems.
The first outpost to be settled by the humans was based in the northern hemisphere of the planet aptly named "Outpost One". Due to the vast distance between Earth and NaPali the first human ship to arrive carried with it an intergalactic transit gate, which is capable of instantaneous transit from Earth to NaPali. With a firm presence setup on NaPali setup the humans began to explore the surrounding area. It wasn't long before they discovered the Nali who they befriended and gradually over time gained their trust.
With the on-going exploration of NaPali you and your comrade have been sent out to survey the planet from orbit. During the trip, you are attacked by an unknown ship and sent plummeting back to NaPali. You survive the crash, but are unable to reach Outpost One to warn them on the radio, this could be signal the beginning of an imminent alien attack. You must make your way across the terrain to outpost one and warn them. You'll travel through Nali and hostile Krall territories, across the mountains and canyons of Napali's hostile northern hemisphere, it's a long journey to Outpost One, but you're the best of the best, if anyone can do this it's you. You may be all that stands between the future of NaPali and ultimately that of Earth.