Descent II is a 3D first-person shooter video game noted for popularizing the use of true 3D rendering technology and providing the player with six full degrees of freedom (often abbreviated "6DOF") to move and to look around.
Originally planned as an expansion (and not a sequel) to Descent, Descent II added more weapon types, vastly improved robot types and AI. It was followed by Descent 3.
The trademark for Descent was allowed to lapse by Interplay in 2002, but was re-registered by the company in 2008.
Read more about Descent II: Plot, Gameplay, Visuals, Descent Novels, Source Code