The Gray Death is a nano-virus used by Majestic 12 in Deus Ex as part of their plan to take over the world.
Ambrosia the vaccine for the Gray Death was created by Bob Page. The main antagonist Bob Page industrialist, philanthropist and the founder and owner of Page Industries,the wealthiest and most powerful man in the world.In 2026 and 2027, Bob Page is working with other Illuminati members on a "biochip initiative",their plan is to distribute a biochip that would allow the Illuminati to control mechanically augmented people.The Illuminati believe that absolute freedom is analogous to absolute chaos, hence the need for them to sacrifice some of an individual's freedom to maintain order as they believe that society would not function without the intervention and guidance of an elite group which makes decisions for the masses so they exterminate members of a society whose abilities greatly exceed the average are a threat to the society's stability.Whenever someone threatens to do something that will upset the balance, like flying too high … the Icarus Effect kicks in. Society reacts, cuts them down. Stability returns.
The game is based on cyberpunk works of fiction like blade runner,Altered Carbon, Neuromancer etc & other dystopian fiction books, my theory on these types of media is that most works of dystopian fiction are predictive programming & not warnings for population be warned about future man made horrors.The producers of those types of entertainment media want people to get used to these ideas,it normalizes things that anyone would be alarmed by when they hear about them for the first time,they are advertisements not predictions.How many times have you heard this reply "it's just like the black mirror/twilight zone episode" when you discuss surveillance,social credit scores or some other form of technocratic tyranny.What happens after that reply do the people wake up and act to take back their freedoms lost or do they go back to sleep after spouting their programmed reply "It's just like some work of dystopian fiction". The netflix consuming NPC normalfag do not know what to do when they read,watch or play something like Deus Ex they are not alarmed by those ideas that the work of fiction is trying to communicate to them, they can not relate the things being shown in the work of fiction to the real world they accept all of it as fiction & when they confronted by the some things that were advertised in some black mirror episode, all they can think of is it cant be real its all fiction or what can you do about its just the "new normal".