Omikron: The Nomad Soul, first Quantic Dream's game from '99.
I liked some of their games afterwards, but that one, though with some jank, was quite ahead of its time, being very atmospheric 3D semi-open world action-adventure, and remained my favourite (having David Bowie do the soundtrack and be one of the most important characters in the game also gives it special vibe).
Sequel was to be called Nomad Souls:Exodus or Omikron 2: Karma and was in the works, when Fahrenheit (Indigo Prophecy) made a splash, so Cage's directorial ambitions pushed QD to focus on that type of games.
Occasionally, I still hope that some day there will be another game like that from QD. Occasionally.