Descent 3

Descent 3 (stylized as Descent³) is a first-person shooter video game developed by Outrage Entertainment and published by Interplay Productions. It was released for Microsoft Windows on June 17, 1999, for Mac OS in November 1999, and for Linux in July 2000. Descent 3 is the third game in the Descent video game series and a sequel to Descent II.

Unlike standard first-person shooters, the player must control a flying ship that has a six degrees of freedom movement scheme, allowing the player to move in any 3D direction. The game features both indoor and outdoor environments, made possible through the use of a hybrid engine that combines the capabilities of a portal rendering engine with those of a flight simulator-like terrain engine.