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Descent is a 3D first-person shooter video game developed by Parallax Software and released in 1995. It is still cherished by a strong community of fans, particularly for its online multi-player, and new levels continue to be developed. It spawned two direct sequels: Descent II and Descent 3.

The series has a strong following due to its unique six degrees of freedom (6DOF) game-play. However, because this game-play can be challenging and strongly favors the use of a joystick, Descent never gained the popularity of more conventional ground-based 3D first-person shooter games.[citation needed]

The trademark for Descent was allowed to lapse by Interplay in 2002 [1] and has been re-registered by them in 2008.[2]