The Nomad Soul (known as Omikron: The Nomad Soul in North America) is an adventure game developed by Quantic Dream and published by Eidos Interactive. It was released for Microsoft Windows in 1999 and Dreamcast in 2000. The player can engage in unarmed and armed combat, explore the three-dimensional environment of Omikron City, and talk with non-player characters to progress the story. It follows an investigation into a case of serial killings, which unravels the supernatural truth behind the city's ancient history.
https://en.wikipedia.org/wiki/The_Nomad_Soul