Deus Ex takes place in 2052,[c] as it exists if real-world conspiracy theories turn out to be true.[14] These include speculations regarding black helicopters, vaccinations, and FEMA, as well as Area 51, the ECHELON network, Men in Black, chupacabras (in the form of "greasels" and "karkians" which in game are transgenic creatures created by genetic engineering by a corporation), and grey aliens.

https://en.wikipedia.org/wiki/Deus_Ex_(video_game)

Video game description