Hrmmm what is Deus Ex and why does Steam say I own it and Missing Link? (well, I can GUESS the why.. but seriously should I bother with it)
That's the new one ya'll are fakey-bro'ing right?
Edit: Hrm.. maybe not lots of people can't seem to get it to work on Win10.
The new Deus Ex = Deus Ex: Mankind Divided.
It's a sequel to Human Revolution.
Deus Ex: Human Revolution has DLC called The Missing Link. I assume you own those both, since you can't activate DLC on Steam without already owning the base-game.
Deus Ex series is a cyberpunk sci-fi FPS/RPG/shooter/stealth game. Deus Ex has heavy focus on dystopia, where there's Gov't conspiracies; corporations being too powerful; technology being an important factor; secret societies like The Illuminati controlling + manipulating everything + everybody; etc.
Highly recommend you play Deus Ex (original) and Deus Ex: Human Revolution, if you haven't already - they're masterpieces.