After completing his training, UNATCO agent JC Denton takes several missions given by Director Joseph Manderley to track down members of the National Secessionist Forces (NSF) and their stolen shipments of the Ambrosia vaccine, the treatment for the Gray Death virus. Through these missions, JC is reunited with his brother, Paul, who is also nano-augmented. JC tracks the Ambrosia shipment to a private terminal at LaGuardia Airport. Paul meets JC outside the plane and explains that he has defected from UNATCO and is working with the NSF after learning that the Gray Death is a human-made virus, with UNATCO using its power to make sure only the elite receive the vaccine.
As the player accomplishes objectives, the player character is rewarded with "skill points". Skill points are used to enhance a character's abilities in eleven different areas, and were designed to provide players with a way to customize their characters; a player might create a combat-focused character by increasing proficiency with pistols or rifles, while a more furtive character can be created by focusing on lock picking and computer hacking abilities. There are four different levels of proficiency in each skill, with the skill point cost increasing for each successive level.
Source: Wikipedia, "Deus_Ex_(video_game)," available under the CC-BY-SA License.
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