Access to the island is available through both the south and north docks. In a daring raid, the National Secessionist Forces attack Liberty Island to intercept a shipment of Ambrosia, managing to capture Gunther Hermann in the siege. The protagonist, JC Denton, is ordered to infiltrate the statue to rescue Hermann and interrogate the NSF commander Leo Gold near the top of the reachable section of the tower.
After the NSF raid on Liberty Island, the rest of the island is closed off for investigation, only allowing access to UNATCO HQ by helicopter.
On the last visit to Liberty Island, if managing to get out from the gate, JC can encounter an hostile NSF mercenary thug walking, just left from the main entrance of the statue. This is an uncancelled mistake from the first visit, where the thug usually was.
"JC Denton began his career by helping to neutralize a band of terrorists who had taken control of Liberty Island. The island once concealed a United Nations Anti-Terrorist Coalition (UNATCO) base. Since the Collapse, the island has been abandoned. Paul Denton worked for UNATCO until he defected when he learned of their corruption."
Liberty Island plays an important role in Deus Ex: Invisible War. The 3 major forces vying for world control in the game, the Illuminati, Knights Templar and ApostleCorp, are all trying to access the old Aquinas servers under UNATCO, which would effectively give one side enough power to accomplish their own objective and eliminate the other two. JC Denton places his the Helios AI's servers, a more modern form of Universal Constructor, and a mass nanite distribution center under the Statue of Liberty's pedestal. He rebuilds the Statue with nanites and lowers the temperature to increase their effectiveness, literally turning the island into an ice cap. Over 20 years, the UNATCO HQ has been gradually abandoned, and now is populated entirely by homeless people and the former maintenance and janitorial staff. The Knights Templar establish a makeshift base under a small bunker on the north side of the island and maintain a military presence on the island through Paladins in Templar V68A power armor and a few RB-76 Military bots. On the northern dock, where Harley Filben was located in the first game, Tracer Tong has his own force to assist ApostleCorp, 3 HS-66 Hunter-Seeker bots, though their protective carriers have all been frozen solid. On the southern dock, where the first game began, the Illuminati have built their own base on a massive glacier over the former ocean. Chad Dumier and Nicolette DuClare both reside in this house, and countless Illuminati Elite Troopers patrol the dock. Whichever side Alex chooses to support here will be given world control and give the player one of 3 endings, each one showing how the winning faction will affect the world in the future. If they choose to kill all 3 leaders, they will get a 4th ending where mankind eventually eliminates itself through 200 years of nuclear war, with only the Omar emerging. If they choose to take the American flag in the UNATCO HQ and use it on a toilet in the woman's restroom, they will get a secret 5th ending, where the characters are seen dancing in Club Vox and quotes from the developers can be read.
During Deus Ex a sunken boat can be found just off the north dock of the island.
The comm van bedside UNATCO headquarters requires the code 0451 to enter it. This number is a reference to the door code that was needed to access the offices of Looking Glass Studios. The number first appeared in Looking Glass' game System Shock, as well as its sequel System Shock 2. The code has since appeared in numerous other games including Deus Ex: Human Revolution and Deus Ex: The Fall.